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SurveyJS
Open-Source JSON Form Builder to Create Dynamic Forms Right in Your App. With SurveyJS form UI libraries, you can build and style forms in a fully-integrated drag & drop form builder, render them in your JS app, and store form submission data in any backend, inc. PHP, ASP.NET Core, and Node.js.
Moreover, if your blocking issue is appearing only on heavy load, you can easily test it using the very nice --autocannon CLI param (see it with clinic flame --help) where you can specificy autocannon options to generate some HTTP load on your web service.
They showed how to find bottlenecks on Node.js applications using Flamegraphs using a very nice profiler they built called Clinic JS.
They showed how to find bottlenecks on Node.js applications using Flamegraphs using a very nice profiler they built called Clinic JS.