not8 is a one-stop shop product feedback platform - leave text and video sticky notes right on the webpage, automatically send them to thousands of tools such as JIRA, ClickUp and Slack

Not8

This interview series celebrates all the phenomenal . Today we are talking with the CEO & co-founder of not8 - Yaroslav Medvedev. Congratulations, well-deserved! The HackerNoon community is excited to learn more about you! Startups of the Year Winners https://hackernoon.com/startups/europe/europe-amsterdam-netherlands What does it mean for you to win this title? Thank you, it’s a great honor to be named Startup of the Year! We are super excited :) It’s a great milestone for our team and a recognition of our efforts. What sets you apart from the competition? Honestly, it depends on who you consider as our competitors - but I’d say that the main differentiating factors of not8 are: ability to work with live websites and apps real-time multipersonal collaboration multi-format feedback (text, video, screenshots) In 2024, we are also adding the AI assistant that will act as a product review companion, which will be another differentiating factor. What do you love about your team, and why are you the ones to solve this problem? Vlad & I have been working together since 2021 (we had another project before co-founding not8), and two main things that I like about our team is that (1) our values match, (2) our skills are complementary, so our responsibilities are clearly divided - Vlad covers everything tech-related, and I cover everything business-related. We both faced the problem of unstructured and ambiguous feedback at our previous jobs and experienced the pain firsthand, which makes us great candidates to solve it. If you weren’t building your startup, what would you be doing? Hmm, I like building things, but I’m not technical. So, if I couldn’t build things in my own company, I would probably do that at somebody else’s. I think I’d work in a Product Management department. At the moment, how do you measure success? What are your core metrics? Since not8 is still pre-revenue, our key metrics revolve around product usage. We measure the total number of installations, the number of active users, and the total number of notes left. As of today, we have 1500+ registered users who left 9500+ notes in total. Tell us how your startup is changing the world. Obviously, not8 is not one of those startups that tackle the fundamental problems of humanity, but we help teams build better products faster. With not8 Product Managers, Developers, Designers, QA, and Marketing Specialists can spend less time talking and iterating and focus on what matters the most - building great things! How do you or your company intend to embrace the responsibility of this title in 2024? Haha, I don’t think it will change much in what we are going to do, to be honest. We will just continue pushing forward, making our product better and our users happier. What goals are you looking forward to accomplishing in 2024? We have a big roadmap, but let me share a few main things. First of all, we want to create a not8 widget so our clients can collect feedback from external users more easily (users won’t need to install anything anymore to leave feedback). This is particularly interesting for enterprise clients with a large number of website visitors - e.g., eCommerce platforms. Another big thing we are going to work on is an AI-powered digital companion. Our AI assistant will automatically test your software for bugs, check that all UI elements comply with your brand guidelines, analyze your website content, and suggest improvements, both from marketing and SEO perspectives. It will provide contextual comments with suggestions right within the product you build and engage in conversations with your team. Which trend(s) are you most excited about in 2024? Share your reasons. AI obviously, it’s omnipresent, everyone is talking about it, and unlike many other over-hyped trends, I think this one is real. It has low barriers for entry (millions of people already use tools like ChatGPT or Perplexity) and high retention (I use AI tools almost on a day-to-day basis, and half of the people I know do so as well). I don’t see any other technology eclipsing this trend in 2024. To be honest, it will just continue developing and getting better. 2023 had been another crazy year, especially in tech, with layoffs and the Generative AI takeover! Which trend are you most concerned about? Be as brief or as detailed as you like. Layoffs are happening because less venture capital is available now, especially at the later stages. Companies are forced to cut their expenses and raise money on lower valuations than they raised just a couple of years ago. This is obviously a concerning trend, but I have a feeling that “VC winter” is coming to an end. Share your biggest success so far and/or your biggest failure so far. Building not8 to 1500+ users, getting into the top 1% of applicants who get the investment from Antler, and raising $270k are definitely my biggest successes so far, but hopefully not the biggest ever, haha. I try to get better every year, this is just a beginning. And failures… Who cares about failures? Let’s not talk about them :) Let’s just say that not8 is the 5th project that I’m working on. It is the most serious one as well - it’s the first time I’ve raised VC money and the first project of mine that I’m working on full-time. Working on something full-time is a completely different experience than working part-time, I must say. A lot more is done because you don’t shift your focus to anything else. We would love your feedback on HackerNoon as a tech publication! How has your experience been with us? So far, so good :) I’ve just recently become your active reader and community member. Honestly, I think what you are doing is great and HackerNoon is an invaluable resource for startup founders - it keeps you updated about all the latest trends and insights in the tech industry. Any words of wisdom you’d like to share with us? I think staying adaptable and open to learning is key in the current environment - everything seems to develop and change so fast. When we were starting out (which was just 1.5 years ago), almost no one knew about ChatGPT and Generative AI - now, almost every startup seems to have some AI functionality. But staying adaptable doesn’t mean running after everything that is currently considered a “hot tech.” It is about understanding the needs of your users and leveraging emerging technologies to make their experience better. Users first, “hot tech” second. Startups of The Year is HackerNoon’s Flagship community-driven event celebrating startups that survived and thrived in 2023. 30,000 startups across 4200+ cities and six continents participated this year to be crowned the best startup in their city. See our global winners announcement . here Companies that blog more get 67% more leads - Jumpstart your company’s blogging journey by purchasing our . Business Blogging Package The 2023 Startups Of The Year is sponsored by: . . The winners will get a free .Tech Domain, a HackerNoon NFT, and a Tech Company News Page. TECH Domains

Meet not8, Winner of the Startups of the Year in Amsterdam

The wait is over! - it’s time to celebrate the champion startups of the world. Shout out to all of the participants in our ! You did a wonderful job showcasing your incredible startups and powering through another year. 2023 Startups of the Year is a community-driven voting platform brought to you by HackerNoon that recognizes and celebrates tech startups changing technology and the world for the better. The award started on May 8th, 2023, where the internet nominated and voted for 30k startups around the world. The voting period remained open until December 31, 2023, and now we are here with the winner announcement after a comprehensive evaluation by the HackerNoon team. Startups of the Year 2023 To see the top 3 startups in each respective city, visit and pick a city. hackernoon.com/startups You’ll get a little surprise 😉 Here are the Startups of the Year Regional Announcements: North America Europe Asia Africa South America Oceania Misc/Remote From all of us at HackerNoon, thank YOU for your excellent campaign perseverance 🥺 This year has been awesome! Startups of the Year 2023 is concluded with 623k+ total votes, up from 215k+ votes in the inaugural startup competition. We look forward to seeing you again in the next campaign (stay tuned 😉)! Without further ado, let us kick off the announcement by celebrating the cities with top votes per region for 2023 🎉 North America (11,697 votes): Winner: Bloomfilter Cleveland, Ohio (8,835 votes) - Winner: SerpApi Austin, Texas , California (5,564 votes) - Winner: Finch San Francisco (4,258 votes) - Winner: RELAYTO SoMa, California - (3339 votes) Winner: Windscribe Toronto, Canada, North America (3304 votes) - Winner: Vouched Seattle (2716 votes) - Winner: Seccuri Palo Alto, CA, North America (2671 votes) - Winner: Salsa Valley Miami, FL, North America (2,613 votes) - Winner: Majhi Group Manhattan, New York (2423 votes) - Winner: Flieber, Inc. New York City, NY, North America See the complete announcement for the . Startups of the Year, North America, here Europe (45,612 votes) - Winner: Algomo London, UK (2,344votes) - Winner: Data Lake Warsaw, Poland (1,955 votes) - Winner: Hoken Tech Bari, Italy (1716 votes) - Winner: Not8 Amsterdam, Netherlands (1657 votes) - Winner: KYVE Frankfurt Am Main, Germany (1566 votes) - Winner: BazaIT Kyiv, Ukraine (1496 votes) - Winner:  Unity Network Tallinn, Estonia (1,478 votes) - Winner: Volcaino Ghent, Belgium (1,288 votes) - Winner: Owl Me Dublin, Ireland (1198 votes) - Winner: Groover Paris, France See the complete announcement for the . Startups of the Year, Europe, here Oceania (3,350 votes) - Winner: Sharepass Melbourne (2,107 votes) - Winner: The Catfisher Project Perth, Australia (220 votes) - Winner: Gemini AI Solutions Auckland, New Zealand, Oceania (213 votes) - Winner: Nexustorage Wellington, New Zealand, Oceania (138 votes) - Winner: Coviu Sydney (124 votes) - Winner: Bopple Brisbane, Australia, Oceania (124 votes) - Winner: Regional CFO New South Wales, Australia, Oceania (106 votes) - Winner: Edit on the Spot Gold Coast, Australia, Oceania (93 votes) - Winner: Knowledge Satnav Canbera, Australia, Oceania , Australia, Oceania (48 votes) - Winner: Peptalk360 North Melbourne, Melbourne See the complete announcement for the . Startups of the Year, Oceania, here Asia (16,345 votes) - Winner: Serenity Shield Singapore (13,588 votes) - Winners: QUIXY Telangana, India (10,168 votes) - Winner: HealthySure Mumbai, India (3,865 votes) - Winner: InterviewBuddy Visakhapatnam, India (3,733 votes) - Winner: Omniflo Bengaluru, India (4589 votes) - Winner: MeNow Tel Aviv (3877 votes) - Winner: ForestVPN Dubai (2478 votes) - Winner: TechGraph Powai, Mumbai, India (1004 votes) - Winner: Reelo Ahmedabad, GJ, India (875 votes) - Winner: Debt Hunter Hong Kong, China See the complete announcement for the . Startups of the Year, Asia, here Africa (8,179 votes) - Winner: GO PLATFORM Algiers, Algeria (767 votes) - Winner: Tudu Accra, Ghana (415 votes) - Winner: Treford Lagos, Nigeria (265 votes) - Winner: Phalconwise Ogbomosho, Nigeria (157 votes) - Winner: AbuErdan Cairo (151 votes) - Winner: Eazipay Lekki (144 votes) - Winner: KaziConnect Dar es Salaam, Tanzania (101 votes) - Winner: faceATT Gauteng, South Africa (79 votes) - Winner: Dimagi Cape Town (71 votes) - Winner: Sabi Addis Ababa See the complete announcement for the . Startups of the Year, Africa, here South America (376 votes ) - Winner: UpGirl Santiago, Chile (217 votes) - Winner: Klever Sao Paulo, Brazil (191 votes) - Winner: Tributo Simple Buenos Aires, Argentina (127 votes) - Winner: Light-it Montevideo, Uruguay (87 votes) -Winner: Thousand Antioquia, Colombia (108 votes) - Winner: GetLavado Lima (101 votes) - Winner: Cogniflow Medellin (73 votes) - Winner: TPAGA Bogota (73 votes) - Winner: Reliv Quito (47 votes) - WInner: Quantex Cordoba See the complete announcement for the . Startups of the Year, South America, here Misc/Remote: Featured Startups (1500 votes) - Winner: CIC Chain Remote, Earth (1193 votes) - Winner: Reship Colony US Misc (146 Votes) - Winner: Partful UK, Misc (116 votes) - Winner: GoMining British Virgin Islands Misc (283 Votes) - Winner: tomorrowSpace Germany Misc (225 votes) - Winner: Dtravel Cayman Islands See the complete announcement for Misc/Remote startups . here Once again, HUGE CONGRATULATIONS and BIG PROPS to all of the top Startups of each region this year! The whole team at HackerNoon would like to thank you for your perseverance in the campaign, and we look forward to seeing you in the next campaign. About HackerNoon’s Startups Of The Year Startups of The Year is HackerNoon’s Flagship community-driven event celebrating startups that survived and thrived in 2023. 30,000 startups across 4200+ cities and six continents participated this year to be crowned the best startup in their city. Visit our page to learn more. FAQ Companies that blog more get 67% more leads - Jumpstart your company’s blogging journey by purchasing our . Business Blogging Package The 2023 Startups Of The Year is sponsored by: . . The winners get a free .Tech Domain, a HackerNoon NFT, and a Tech Company News Page. TECH Domains

Stand Up for the Champion Startups of the Year! 

বছরের চ্যাম্পিয়ন স্টার্টআপের জন্য দাঁড়ান!

Setzen Sie sich für die Champion-Startups des Jahres ein!

¡Defiende a las startups campeonas del año!

Défendez les startups championnes de l’année !

वर्ष के चैंपियन स्टार्टअप के लिए खड़े रहें!

今年のチャンピオンスタートアップのために立ち上がろう!

올해의 챔피언 스타트업을 위해 일어서세요!

Defenda as startups campeãs do ano!

Встаньте на защиту стартапов-чемпионов года!

Yılın Şampiyon Startup'ları için Ayağa Kalkın!

Hãy ủng hộ các công ty khởi nghiệp vô địch của năm!

为年度冠军初创企业挺身而出！

Emphatic words must stand in emphatic positions

Intro In this article I’ll try to tell you about static analyzers and what they can bring to the code, to share with you possible difficulties, and to show you how the developer and analyzer work together. For my examples, I’ll use PHP, although solutions such as have implementations in many other languages as well. SonarQube So, let’s begin. What Are Analyzers For? Code analysis is an integral part of any developing process, on an equal level with testing and code reviews. Frequently, developers review the same code tens of times, checking that everything written fits the standards of code writing in the project, in the team, and in the company. In order to offload developers and speed up manual code analysis, various code analyzers were created. If the analyzer is set up correctly, the development process is accelerated, and the code quality increases. Static code analysis allows you to view the entire application code at once without the developer's participation which makes it different from manual or dynamic analysis. Static analysis, as the name says, does not run the code, but only looks through it for errors in the code, such as incorrectly specified types in function arguments, unused variables, etc. Static code analysis is performed by any team, even when developing alone. When writing code, every developer examines it for possible problems and smells. Because of this, a developer may make a mistake in the business logic when checking additional, technical parts of the work. Solutions for Static Code Analysis in PHP There are a lot of static analyzers available for PHP at the moment. Today, we will go through them with a short review of each, and then compare them so that you can choose the right one for your project. Short Review PHPStan Founded in 2016, it is one of the most popular static analyzers in PHP. At the moment, the project is supported by several developers, and the number of downloads of the package has exceeded 127 million. Among the main differences of PHPStan is the built-in support for plugins (available for example to work with modern frameworks). Has the ability to specify the level of checks. Does not have error types which is sometimes inconvenient when you need to enable or disable a particular one. Also has a paid GUI version of the application instead of CLI, which is important for some people. Phan In development since 2015, Phan has over 5 million downloads. Phan is much less popular but has serious weight as Rasmus Lerdorf, one of the creators of PHP, was also involved in its development. Among the advantages of Phan are its ability to act as a Language Server and real static. Phan does not attach the files it needs. It first builds the project tree using the PHP-ast library and then analyzes the files it needs. This method allows for faster analysis but has drawbacks. For example, Phan cannot count PHPDoc blocks inside methods, which often leads to false positives. Psalm Founded by Matt Brown of Vimeo in 2014, Psalm is also one of the top solutions for PHP. The project currently has over 33 million downloads. Can mention logic assertion checks and security hole checks as key features. Can perform some simple edits by itself. It also has an advantage over PHPStan, as it does not load unused files when checking part of the code base. On the plus side, it has excellent documentation where you can find all types of errors, as well as play in the sandbox and send to a colleague if necessary. It also has its own set of custom PHPDoc blocks for better analysis, e.g., type analysis. Mess Detector Created in 2005, Mess Detector has already been downloaded more than 65 million times. Mess Detector differs from all the analyzers mentioned before in that it analyzes code from the point of view of finding code with smells or without clean code principles. With its help, we can find out which classes we need to refactor because they have a lot of code/logical operations, or we can also see places not following design principles and clean code. PHP_CodeSniffer Its first version was released back in 2003, which puts it among the oldest static analyzers in PHP. Despite this, it is still being updated and has been downloaded more than 193 million times so far. The main difference with CodeSniffer is that it checks code for code style, which reduces its capabilities but gives it the speed of execution and the ability to fix many errors. Comparison Since all analyzers have a lot of possibilities, it is sometimes difficult to make a choice among the described solutions. Let's try to arrange the data by analyzers with the help of the table: Feature PhpStan Psalm Phan Mess Detector CodeSniffer Sandbox + + + - - CodeStyle - - - - + Variable Types + + + - + Method return types + + + - - Language Server extension + plugin - - IDE Integration + + w/o PHPStorm + + Plugins + + + - - Speed Fast, speed decreases as the complexity of the project increases Fast Medium Fast Fast Autofixer + Psalter + - + Method/Class size check - - - + - Сheck for unenforceable conditions + + + - - PHPDoc check + + +/- - + Union types check + + + - + Array shapes support + + - - - Possible Problems During Implementation The main problems during implementation are developers' unwillingness to get used to a new tool and incorrect initial settings. Due to the fact that when setting a more strict level of checks, the static analyzer often generates a huge number of errors, which greatly affects the psychological state of the team. Each static analyzer has 3 tools to solve this problem: - indicates the level of severity of startup checks. The easiest way to reduce the number of startup errors. After adding startup to the standard development process, you can gradually increase the level. Level - writes errors during the check to a file so that the analyzer does not generate errors that are already in the file during the next runs. With the help of this tool, you can remove old errors at once and keep an eye on not adding new ones. You can also create a task pool to gradually get rid of errors from Baseline. Baseline - helps to check only the code that has been modified by the developer. Due to the use of links, namespaces, and autoloaders, it is not always a preferable option because it cannot check the work of the whole application. Diff However, the speed of the analyzer's work in this case motivates the developer to run it more often. It is not worth using it in CI because you need to make sure that the whole application works correctly before sending it to the extension. Examples To test PHPStan, Phan, and Psalm, I used a large file with more than 700 lines. After the test launch of all three analyzers, it turned out that there were only 11 common places in the code where all three analyzers produced a Warning or Error. Let's go through the examples where some analyzers worked and others did not. PHPStan function getData(): ?Data;
function setData(Data $data): void;
$data = $user->getData(); 
$anotherUser->setData($data);
//PHPStan  Cannot call method setData() on \User|null. public function getPaginatedList(array $ids, int $page, int $pageSize): PaginatedList
// PHPStan Method App\Service\Service::getPaginatedList() has parameter // $ids with no value type specified in iterable type array.          
// 💡 See:  //https://phpstan.org/blog/solving-phpstan-no-value-type-specified-in-it//erable-type /** @var AnotherService */
private $anotherService;
private $logger;
//PHPStan Property App\Service\Service::$logger has no type specified Phan if (!empty($data['user']['address'])) {
    $this->geoService->searchByStreet($data['user']['address']);
}
//Phan: PhanTypeMismatchArgumentNullable Argument 1 ($address) is $data['user']['address'] of type ?false|?string but \App\Service\GeoService::searchByStreet() takes string defined at src/Service/GeoService.php:35 (expected type to be non-nullable) /** @var EntityManagerInterface */
private $entityManager;

public function __construct(
    EntityManagerInterface $entityManager
) {
    $this->entityManager = $entityManager;    
}

$repository = $this->entityManager->getRepository(User::class);
//Phan: PhanUndeclaredMethod Call to undeclared method \Doctrine\ORM\EntityManagerInterface::getRepository Psalm $doc = new DocumentDto(
$data->getDocument()['series'],
$data->getDocument()['number'],
new \DateTimeImmutable(
    $data->getDocument()['issuing_date']
));
//Psalm: INFO: PossiblyNullArgument - src/Service/Service.php:301:20 - Argument 2 of App\Dto\DocumentDto::__construct cannot be null, possibly null value provided (see https://psalm.dev/078)
//  $data->getDocument()['number'], public function doSomething(): ?string;

public function upsertAndDoSomething(
    int $id,
    Info $info
): string {
    return $this->doSomething();
}
//INFO: InvalidNullableReturnType - src/Service/Service.php:113:8 - The declared return type 'string' for App\Service\Service::upsertAndDoSomething is not nullable, but 'null|string' contains null (see https://psalm.dev/144)
): string { PHPMD Clean Code FILE: /app/src/Validator/Validator.php
------------------------------------------------------------------------
 42   | VIOLATION | Avoid using static access to class 'Enum' in method 'validate'.
 55   | VIOLATION | Avoid assigning values to variables in if clauses and the like (line '61', column '13').
 55   | VIOLATION | Avoid assigning values to variables in if clauses and the like (line '66', column '15').
 67   | VIOLATION | Avoid using static access to class '\App\Helpers\Helper' in method 'map'.
 70   | VIOLATION | Avoid using static access to class '\App\Requests\Request' in method 'map'. Design FILE: /app/src/Service/Service.php
-----------------------------------------------
 30 | VIOLATION | The class Service has a coupling between objects value of 24. Consider to reduce the number of dependencies under 13. Unused Code FILE: /app/src/Service/Service.php
------------------------------------------------
 31  | VIOLATION | Avoid unused parameters such as '$token'.
 32  | VIOLATION | Avoid unused parameters such as '$user'.
 33  | VIOLATION | Avoid unused parameters such as '$url'. Codesize FILE: /app/src/Consumer/Consumer.php
----------------------------------------------
 63   | VIOLATION | The method __construct has 10 parameters. Consider reducing the number of parameters to less than 10.
 92   | VIOLATION | The method execute() has a Cyclomatic Complexity of 22. The configured cyclomatic complexity threshold is 10.
 92   | VIOLATION | The method execute() has an NPath complexity of 6401. The configured NPath complexity threshold is 200.
 92   | VIOLATION | The method execute() has 124 lines of code. Current threshold is set to 100. Avoid really long methods. PHPCS FILE: src/Service/Service.php
------------------------------------------------------------------------------------------------------------------------------
FOUND 15 ERRORS AND 9 WARNINGS AFFECTING 22 LINES
------------------------------------------------------------------------------------------------------------------------------
 144 | WARNING | [ ] Line exceeds 120 characters; contains 151 characters
 184 | WARNING | [ ] Line exceeds 120 characters; contains 128 characters
 328 | ERROR   | [x] The first expression of a multi-line control structure must be on the line after the opening parenthesis
 336 | WARNING | [ ] Line exceeds 120 characters; contains 130 characters
 366 | WARNING | [ ] Line exceeds 120 characters; contains 127 characters
 395 | ERROR   | [x] Empty lines are not allowed in multi-line function calls
 440 | ERROR   | [x] Opening brace must be the last content on the line
 440 | ERROR   | [x] Closing brace must be on a line by itself
 440 | ERROR   | [x] Each PHP statement must be on a line by itself
 481 | WARNING | [ ] Line exceeds 120 characters; contains 149 characters
 486 | ERROR   | [x] The first expression of a multi-line control structure must be on the line after the opening parenthesis
 488 | WARNING | [ ] Line exceeds 120 characters; contains 122 characters
 503 | ERROR   | [x] Opening parenthesis of a multi-line function call must be the last content on the line
 545 | WARNING | [ ] Line exceeds 120 characters; contains 122 characters
 546 | WARNING | [ ] Line exceeds 120 characters; contains 138 characters
 587 | WARNING | [ ] Line exceeds 120 characters; contains 144 characters
 588 | ERROR   | [x] The first expression of a multi-line control structure must be on the line after the opening parenthesis
 594 | ERROR   | [x] The first expression of a multi-line control structure must be on the line after the opening parenthesis
 602 | ERROR   | [x] The first expression of a multi-line control structure must be on the line after the opening parenthesis
 619 | ERROR   | [x] The first expression of a multi-line control structure must be on the line after the opening parenthesis
 626 | ERROR   | [x] The first expression of a multi-line control structure must be on the line after the opening parenthesis
 634 | ERROR   | [x] The first expression of a multi-line control structure must be on the line after the opening parenthesis
 679 | ERROR   | [x] The first expression of a multi-line control structure must be on the line after the opening parenthesis
 724 | ERROR   | [x] Expected 1 space after closing brace; newline found
------------------------------------------------------------------------------------------------------------------------------
PHPCBF CAN FIX THE 15 MARKED SNIFF VIOLATIONS AUTOMATICALLY
------------------------------------------------------------------------------------------------------------------------------ Collective Use As you can see in the examples - at the moment, every analyzer cannot meet all the desires and requirements of code coverage. That's why many teams that use such tools use several tools instead of one. It helps to cover most of the errors and also to look at one and the same error from different sides, which makes it possible to fix it faster. Conclusions Despite the fact that static analyzers appeared quite a long time ago, due to the specifics of their implementation, they perform their work differently and have different results too. Each development team can choose the tool it needs. In my opinion, using PHP_CodeSniffer is mandatory for all projects, and as for the choice between PHPStan/Phan/Psalm, we decided to use two of them in our project - Psalm and Phan because Psalm in our realities showed similar results to PHPStan, but has typed errors, which allows us to easily integrate the result with other services, such as Slack or Jira.

Static Analyzers in PHP 

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Best Physical Security Practices for Your Server Room Your server room hosts your most important assets, so it deserves proper protection. Here are four physical security strategies to keep your server room secure. 10. Businesses Have Countless Web Hosting Options: Here's What They Are In the earliest days of the Internet, pioneering businesses didn't have too many options to get their companies online. At the time (the mid to late 1990s), web hosting options were minimal. 11. Understanding APIs and How to Test Them API (an abbreviation of Application Programming Interface) is a special interface (a set of commands/controls) that is designed for the interaction of different 12. Node.js Vs Flask: Which One Has A Better Performance Curious about how Flask stacks up against Node.js? These are my thoughts on the matter. 13. Tutorial: How to Quickly Set up NodeJS Server NodeJS is a popular framework of JavaScript used for back-end web development. And for this, a server is as important as the backbone to a human body. So in this tutorial, we'll learn how to quickly set up a nodeJS server. 14. How Properly Configure Nginx Server for TLS This is a follow up on a story that I've published a few years ago. It still receives a huge amount of traffic so I decided to update it with the latest information. 15. Developers and Cloud IaaS: Why Devs Should Set Up Their Own Cloud Infrastructure Why Infrastructure as a Service (IaaS) still rules, even for developers. 16. Apache Web Server Hardening: How To Protect Your Server From Attacks he web server has a crucial role in web-based applications. Since most of us leave it to the default configuration, it can leak sensitive data regarding the web server. 17. Which GPU is Better for Business, the RTX 4090 or a Server RTX A5000? We shall compare Nvidia's new gaming graphics card, the GeForce RTX 4090, and the powerful RTX A5000 server card. 18. VMware vCenter Converter Alternatives for V2V? VMware is commonly used to set up data centers for organisations. If the most commonly used solution doesn't work, some alternatives may work better for you. 19. How to Connect With External MySQL Servers (Part 1: Select Operations) This tutorial shows how to perform basic select queries to interact with MySQL Server using mysql2 gem. 20. The Bare Facts: What Businesses Have to Gain with Dedicated Servers By Andreea Jakab, Bigstep 21. Functional Testing With Your Backend in Go For Terrastruct, which has a little over 50K lines of code as of now, I've only written functional end-to-end tests. This blog post describes a successful setup that took some iterating to get to, and it's one I wish existed when I started with a Go API backend. 22. How to Automate the Creation of a Development Server In part one, I have shown how to create a remote development using DigitalOcean and rsync. In part two, I will show how to automate the entire process using Bash script. 23. 🐲 Dragon Router Introduction: HTTP Router and URL Matcher For Building Deno Web Servers ⚡A powerful HTTP router and URL matcher for building Deno web servers with dragon 🐲. 24. Alternative Overview of the SSMSBoost Add-in for SQL Server Management Studio (SSMS) Today we will do a short review and features comparison of dbForge SQL Complete and SSMSBoost. 25. Insight Into TCP/UDP, Network Vulnerabilities and Defense Approaches This article provides the network vulnerabilities and defense approaches, with a focus on all the TCP and UDP ports, Port vulnerability, and learn more about Windows, Linux server operation guide. 26. HTTP Made Easy: Understanding the Web Client-Server Communication If you are anywhere related to web development, understanding the concepts of HTTP plays a vital role. So let us understand more about HTTP and its concepts in brief. 27. How to Connect With External MySQL Servers (Part 2: Insert & Update Operations) This is the second part of the series where we perform insert and update operations to interact with the MySQL server in Rails using MySQL2 gem. 28. How to Create a Remote Development Server Introduction 29. Graceful shutdown in NodeJS In this article, I am going to show you how to do a graceful shutdown in NodeJS application, but first, let's describe what does “graceful shutdown” means and why we need to do that in our application and what are the benefits. Thank you for checking out the 29 most read stories about Servers on HackerNoon. to find the most read stories about any technology. Visit the /Learn Repo

29 Stories To Learn About Servers

Hi all! My name is Taras Egorov; I'm an engineer at inDrive. I'll show you how we set up an infrastructure capable of running more than 5,000 tests per day on iOS and Android devices combined. The secret is simple: we used Selenoid. Preface Last year, our colleagues conducted a study of auto testing, and we took part in a survey as part of the study. We were pleased with the survey's findings, so we decided to write an article to share our experience with you and get some advice in return. We thought it a good idea to divide the material into two parts: the first one focusing on Android and the second on iOS. Let's begin with Android. Running the tests on Android Selenoid is a tool for running and managing browsers and Android emulators in a Docker container. You can read more about this . popular in the documentation To write Appium tests, we use: Kotlin; JUnit 5; Maven. The first run. Setting up Selenoid Create a config file: browsers.json {

  "android": {

    "default": "10.0",

    "versions": {

      "10.0": {

        "image": "browsers/android:10.0",

        "port": "4444",

        "path": "/wd/hub"

      }

    }

  }

} The emulator image is specified in . The guys from have prepared ready-made images of Android emulators. You can check them out or . The images don't differ from each other in any way. image aerokube here here Let’s take the image as an example. The image must be downloaded beforehand: , otherwise the tests will not run: browsers/android:10.0 docker pull browsers/android:10.0 Original error: create container: Error response from daemon: No such image: browsers/android:10.0 The next step is to run Selenoid. We do that directly via , or there’s the option of using . docker Configuration Manager docker run -d \

           -v /var/run/docker.sock:/var/run/docker.sock \

           -v "$(pwd)/selenoid/config/":/etc/selenoid/:ro \

           -p 4444:4444 \

           --name selenoid \

           aerokube/selenoid:1.10.7 You can check to see if Selenoid is working properly by following the link in your browser: http://localhost:4444 You are using Selenoid 1.10.7! Specify the Selenoid address in the Appium tests in the driver: ...
val driver = AndroidDriver(URL("http://localhost:4444/wd/hub"), capabilities)
... Next, specify the link to the build in capabilities: ... 
capabilities.setCapability("appium:app", "https://storage.example.com/builds/app.apk")
... If unable to provide a link, you can specify the path to the build:** ...
capabilities.setCapability("appium:app", "/builds/app.apk")
... Where is the path inside the container where the emulator is being run. For this option to work properly, be sure to specify the in : /builds/app.apk volumes browsers.json {

  "android": {

    "default": "10.0",

    "versions": {

      "10.0": {

        ...

        "volumes": [

          "/home/username/app.apk:/builds/app.apk:ro"

        ]

        ...

      }

    }

  }

} Where is the path to the build on the host platform. /home/username/app.apk That's it, we've almost set up Selenoid, and now we can try running the tests: ./mvnw test But, unfortunately, the tests will not be able to run. Let's look into this and see what's wrong. The second run. Taking a look at the logs and video The first thing to do after a failed startup is to check out the Selenoid logs: docker logs selenoid [INIT] [Loading configuration files...]
[INIT] [Loaded configuration from /etc/selenoid/browsers.json]
[INIT] [Video Dir: /opt/selenoid/video]
[INIT] [Your Docker API version is 1.41]
[INIT] [Timezone: UTC]
[INIT] [Listening on :4444]
[NEW_REQUEST] [unknown] [172.17.0.1]
[NEW_REQUEST_ACCEPTED] [unknown] [172.17.0.1]
[LOCATING_SERVICE] [android] [10.0]
[USING_DOCKER] [android] [10.0]
[CREATING_CONTAINER] [selenoid/android:10.0]
[STARTING_CONTAINER] [selenoid/android:10.0] [75e454341da7fc4b58ba104a5180813bac6cd7c124037a759b6c976e65b168fa]
[CONTAINER_STARTED] [selenoid/android:10.0] [75e454341da7fc4b58ba104a5180813bac6cd7c124037a759b6c976e65b168fa] [0.40s]
[0] [REMOVING_CONTAINER] [75e454341da7fc4b58ba104a5180813bac6cd7c124037a759b6c976e65b168fa]
[0] [CONTAINER_REMOVED] [75e454341da7fc4b58ba104a5180813bac6cd7c124037a759b6c976e65b168fa]
[0] [SERVICE_STARTUP_FAILED] [http://172.17.0.3:4444/wd/hub does not respond in 30s] We see that the status is SERVICE_STARTUP_FAILED. Go to the and look at the status value: documentation SERVICE_STARTUP_FAILED - Failed to start Docker container or driver binary The error doesn’t tell you much, and more information is required. It would be good to take a look at the container logs. Let's do that by enabling logging: docker run -d \

           -p 4444:4444 \

           -v /var/run/docker.sock:/var/run/docker.sock \

           -v "$(pwd)/selenoid/config/":/etc/selenoid/:ro \

           -v  "$(pwd)/selenoid/logs/":/opt/selenoid/logs/ \

           aerokube/selenoid:1.10.7 \

           -log-output-dir /opt/selenoid/logs We also enable logs in the Capabilities section: ...
capabilities.setCapability("enableLog", true)
... Run the tests and review the logs using the browser : http://localhost:4444/logs/ 2023-04-16T13:44:43.909768530Z Waiting X server...
2023-04-16T13:44:44.009494775Z Logging to: /tmp/fluxbox.log
2023-04-16T13:44:44.047587277Z Waiting X server...
2023-04-16T13:44:44.151933325Z Waiting X server...
2023-04-16T13:44:44.262850410Z * daemon not running; starting now at tcp:5037
2023-04-16T13:44:44.457972956Z * daemon started successfully
2023-04-16T13:44:44.458249266Z adb: no devices/emulators found
2023-04-16T13:44:45.463480812Z adb: no devices/emulators found
2023-04-16T13:44:46.471547723Z adb: no devices/emulators found
2023-04-16T13:44:47.476093515Z adb: no devices/emulators found
2023-04-16T13:44:48.481987351Z adb: no devices/emulators found
2023-04-16T13:44:49.486503149Z adb: no devices/emulators found
2023-04-16T13:44:50.492757801Z adb: no devices/emulators found
2023-04-16T13:44:51.499094108Z adb: no devices/emulators found
2023-04-16T13:44:52.505862428Z adb: no devices/emulators found
2023-04-16T13:44:53.513276412Z adb: no devices/emulators found
2023-04-16T13:44:54.520642210Z adb: no devices/emulators found
2023-04-16T13:44:55.527420189Z adb: no devices/emulators found
2023-04-16T13:44:56.534631013Z adb: no devices/emulators found
2023-04-16T13:44:57.316094939Z WARNING. Using fallback path for the emulator registration directory.
2023-04-16T13:44:57.335415397Z checkValid: hw configs not eq
2023-04-16T13:44:57.541959741Z adb: device offline
2023-04-16T13:44:58.547907700Z adb: device offline
2023-04-16T13:44:58.565504866Z emulator: WARNING: System image is writable
2023-04-16T13:44:58.565528396Z emulator: Cold boot: different AVD configuration
2023-04-16T13:44:58.565532576Z Your emulator is out of date, please update by launching Android Studio:
2023-04-16T13:44:58.565536346Z  - Start Android Studio
2023-04-16T13:44:58.565539506Z  - Select menu "Tools > Android > SDK Manager"
2023-04-16T13:44:58.565543076Z  - Click "SDK Tools" tab
2023-04-16T13:44:58.565546216Z  - Check "Android Emulator" checkbox
2023-04-16T13:44:58.565549216Z  - Click "OK"
2023-04-16T13:44:58.565552146Z 
2023-04-16T13:44:59.554451514Z adb: device offline
2023-04-16T13:45:00.560926060Z adb: device offline
2023-04-16T13:45:01.568777440Z adb: device offline
2023-04-16T13:45:12.124226047Z emulator: INFO: boot completed
2023-04-16T13:45:12.124251007Z emulator: INFO: boot time 27848 ms
2023-04-16T13:45:12.124255077Z emulator: Increasing screen off timeout, logcat buffer size to 2M.
2023-04-16T13:45:12.152557294Z emulator: Revoking microphone permissions for Google App. The container logs are not much help here either, because you can't see the Appium logs. Now let's try to enable them. To do this, let's look at the script : entry point.sh ...
if [ -z "$VERBOSE" ]; then
    APPIUM_ARGS="$APPIUM_ARGS --log-level error"
else
    EMULATOR_ARGS="$EMULATOR_ARGS -verbose"
fi
... To enable Appium logs, the parameters and : must be passed to the container: VERBOSE=true APPIUM_ARGS=--log-level debug {

  "android": {

    "default": "10.0",

    "versions": {

      "10.0": {

        ...

        "env": [

          "VERBOSE=true",

          "APPIUM_ARGS=--log-level debug"

        ]

        ...

      }

    }

  }

} To enable Appium to debug logs, you need to pass VERBOSE; in this case, the emulator logs turn on and start filling the "ether"” But we fixed that for future images =) Now it is enough to pass to . APPIUM_ARGS=-log-level debug ...
[HTTP] --> POST /wd/hub/session/c89fa9c2-ca2b-49cd-ab31-590eeccf77d1/element
[HTTP] {"using":"id","value":"authorization_edittext_phone"}
[debug] [W3C (c89fa9c2)] Calling AppiumDriver.findElement() with args: ["id","authorization_edittext_phone","
c89fa9c2-ca2b-49cd-ab31-590eeccf77d1"]
[debug] [BaseDriver] Valid locator strategies for this request: xpath, id, class name, accessibility id, -and
roid uiautomator
[debug] [BaseDriver] Waiting up to 0 ms for condition
[debug] [WD Proxy] Matched '/element' to command name 'findElement'
[debug] [WD Proxy] Proxying [POST /element] to [POST http://127.0.0.1:8200/wd/hub/session/65943f03-3b35-4d3eb221-d6dc7988f935/element] with body: {"strategy":"id","selector":
"authorization_edittext_phone","context":"","multiple":false}
[WD Proxy] Got response with status 404: {"sessionId":"65943f03-3b35-4d3e-b221-d6dc7988f935","value":{"error"
:"no such element","message":"An element could not be located on the page using the given search parameters","stacktrace":"io.appium.uiautomator2.common.exceptions.El
ementNotFoundException: An element could not be located on the page using the given search parameters\n\tat io.appium.uiautomator2.handler.FindElement.safeHandle(Find
Element.java:73)\n\tat io.appium.uiautomator2.handler.request.SafeRequestHandler.handle(SafeRequestHandler.java:41)\n\tat io.appium.uiautomator2.server.AppiumServlet.
handleRequest(AppiumServlet.java:253)\n\tat io.appium.uiautomator2.server.AppiumServlet.handleHttpRequest(AppiumServlet.java:247)\n\tat io.appium.uiautomator2.http.Se
rverHandler.channelRead(ServerHandler.java:68)\n\tat io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:366)\n\tat io
.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:352)\n\tat io.netty.chann...
[debug] [W3C] Matched W3C error code 'no such element' to NoSuchElementError
[debug] [W3C (c89fa9c2)] Encountered internal error running command: NoSuchElementError: An element could not
be located on the page using the given search parameters.
[debug] [W3C (c89fa9c2)]     at AndroidUiautomator2Driver.findElOrEls (/opt/node_modules/appium/node_modules/appium-android-driver/lib/commands/find.js:75:11)
[debug] [W3C (c89fa9c2)]     at process._tickCallback (internal/process/next_tick.js:68:7)
[HTTP] <-- POST /wd/hub/session/c89fa9c2-ca2b-49cd-ab31-590eeccf77d1/element 404 23 ms - 444
... As seen from the logs, Appium cannot find our element. Let's see what is happening on the emulator screen. To do this, we have to run the Selenoid UI: docker run -d \

           --name selenoid-ui \

           -p 8080:8080 \

           --link selenoid:selenoid \

           aerokube/selenoid-ui:1.10.4 \

           --selenoid-uri "http://selenoid:4444" Go to and open the Selenoid UI: http://0.0.0.0:8080 Be sure to enable VNC and video recording in the tests: ...

capabilities.setCapability("enableVNC", true)

capabilities.setCapability("enableVideo", true)

... The Selenoid startup command ends up looking like this: docker run -d \

-v /var/run/docker.sock:/var/run/docker.sock \

-v "(pwd)/selenoid/logs/":/opt/selenoid/logs/ \

-v /opt/selenoid/video/:/opt/selenoid/video/ \

-e OVERRIDE_VIDEO_OUTPUT_DIR="/opt/selenoid/video/" \

-p 4444:4444 \

-name selenoid \

aerokube/selenoid:1.10.7 \

-log-output-dir /opt/selenoid/logs Open the Selenoid UI once the tests are up and running: And here's . a video of it https://www.youtube.com/watch?v=Hm7s5ZjnVYQ&embedable=true We found the cause of the startup error. Great! Let’s move on. The third run. Building an emulator image As it turns out, the images of Selenoid emulators won’t work without Google Play services. To remedy this situation, you must build an emulator image yourself. The guys from aerokube have assembled everything you need for this: and . a repository with photos documentation the repository. Downloading Go to the folder. selenium Run the script and answer the questions. This is what it looks like in our case: ./automate_android.sh Specify Appium version: [1.18.1]

>> 1.18.1

Specify Android image type (possible values: "default", "google_apis", "google_apis_playstore", "android-tv", "android-wear"): [default]

>> google_apis

Specify Application Binary Interface (possible values: "armeabi-v7a", "arm64-v8a", "x86", "x86_64"): [x86]

>> x86

Specify Android version: [8.1]

>> 10.0

Specify device preset name if needed (e.g. "Nexus 4"):

>>

Specify SD card size, Mb: [500]

>>

Specify userdata.img size, Mb: [500]

>>

Are you building a Chrome Mobile image (for mobile web testing): [n]

>> y

Specify Chromedriver version if needed (required for Chrome Mobile):

>> 74.0.3729.6

Specify image tag: [selenoid/chrome-mobile:74.0]

>> android-emulator:10.0

Add Android quick boot snapshot? [y]

>> n When I saw the question Add Android quick boot snapshot?, I thought it was an emulator . But if you look at the , it calls a , which is needed to install APK applications. Basically, it doesn't give us any gain. snapshot code script We already use snapshot emulators , but we'll talk about that in other articles. to speed up container launches Once the image is built, we will be prompted to push it into the registry. Since we don't need that yet, we will kindly decline the offer: Push?  >> n We have put together a build with Google Play services. Remember to change the image parameter in browsers.json, and restart Selenoid. Now let's try rerunning the tests: [INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------ And of the test run. here’s a video https://www.youtube.com/watch?v=w-uzB7hg7g8&t=1s&embedable=true To sum up What we have done: Configured Selenoid to run Android tests. Learned how to check out the logs and videos to troubleshoot. Built our own emulator image with Google Play services. Something else I would like to tell you about: Selenoid timeouts. If your app is large, you might run into problems with timeouts. How we tried making the container run faster. The video shows that the run takes about a minute or so. How we tried running native Android tests written in Espresso on Selenoid. Spoiler alert: this works! Meanwhile, in the next part, we'll tell you how we scaled up the infrastructure and ran tests on iOS.

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So führen Sie täglich über 5000 Tests auf Mobilgeräten durch; Aus dem Playbook von inDrive (Teil 1)

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モバイルデバイスで毎日 5000 件以上のテストを実行する方法; InDrive のプレイブックより (パート 1)

매일 모바일 장치에서 5000개 이상의 테스트를 실행하는 방법 inDrive의 플레이북(1부)에서

Como executar mais de 5.000 testes em dispositivos móveis todos os dias; Do manual do InDrive (parte 1)

Her Gün Mobil Cihazlarda 5000'den Fazla Test Nasıl Çalıştırılır; inDrive'ın Başucu Kitabı'ndan (Bölüm 1)

Cách chạy hơn 5000 bài kiểm tra trên thiết bị di động mỗi ngày; Từ Playbook của InDrive (Phần 1)

如何每天在移动设备上运行 5000 多个测试；来自 InDrive 的剧本（第 1 部分）

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