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Node.js Performance

Autocannon API Test

Fast local HTTP benchmarking for Node APIs.

load

Detailed Description

Autocannon is a fast way to benchmark Node HTTP servers locally. It gives immediate feedback on requests per second, latency percentiles, timeouts, and errors.

Use it for focused route-level experiments. Change one variable at a time, such as framework, serialization, DB query, cache use, or concurrency, then compare p95 and p99.

Mental Model

warm app
-> run load
-> inspect p99 + RPS
-> change one variable

When To Use

  • ->Quickly benchmark local Node routes
  • ->Compare Express vs Fastify implementations
  • ->Check p99 before and after a code change
Tools: autocannon, Fastify benchmarks, Express comparison
autocannon.sh

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Output

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