Oracle released a new technology called "GraalVM," which is known as a new general-purpose full-stack virtual machine with high-performance and cross-language interaction. Is it really so magical? GraalVM Intro GraalVM is a general-purpose cross-language virtual machine. It not only supports JVM-based languages such as but it also supports based languages such as Along with Java, Scala, Groovy, and Kotlin, LLVM C and C ++. JavaScript, Ruby, Python and R. GraalVM has the Following Features: Run code more efficiently and quickly. Can interact directly with most programming languages. Embedding multiple languages using the Graal SDK. Create a precompiled native image. Provides a range of tools to monitor, debug, and configure all code. What's the use of GraalVM? Support Multi-Language Combination Programming: const express = require('express');

const app = express();

app.listen(3000);

app.get('/', function(req, res) {

var text = 'Hello World!';

const BigInteger = Java.type(

'java.math.BigInteger');

text += BigInteger.valueOf(2)

.pow(100).toString(16);

text += Polyglot.eval(

'R', 'runif(100)')[0];

res.send(text);

}) It uses , , and at the same time. Node.js Java R GraalVM eliminates the isolation between various programming languages. Will this combination of multiple programming languages have a performance impact? The official statement is zero overhead interoperability so that we can choose the best combination of programming languages for applications. 2. Native Image Acceleration Examine this code: $ javac HelloWorld.java

$ time java HelloWorld

user 0.070s

$ native-image HelloWorld

$ time ./helloworld

user 0.005s GraalVM can be precompiled into a native image, which greatly speeds up the startup time and reduces the memory consumption of JVM applications. 3. Embeddable Running Environment GraalVM can be embedded into various applications. It can run independently or in built-in , and other environments. OpenJDK, node.js, Oracle, MySQL Combined with the above features, let's take a look at the architecture diagram of GraalVM. GraalVM Version Introduction As shown in the figure below, GraalVM provides two versions: The and the . community version enterprise version From the perspective of features, the above-mentioned high-performance and memory optimization seem to be in the enterprise version. Community version download: github.com/oracle/grail/releases Summary GraalVM not only supports mainstream programming languages but also can be programmed together to select the best language according to different tasks. In addition. It can also improve execution efficiency and occupy less memory. It's hard to say whether the application scenario can be applied to production. First published here.

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