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Dev/Avocado is co-founder of Sematext.com and co-Founder at Bookvar.co.co. He says Express.js applications need to do four things well:Ensure minimal downtime.Increase developer productivity by minimizing time spent on troubleshooting and debugging. Set NODE_EN=production is a few well known best practices you should adhere to. Set the environment variable to production three times faster when running your application. Use the cluster module, PM2, Nginx and Redis to boost the performance of your application. Add structured logging and using metrics.