Overview

Comparison of different language/frameworks' performance on I/O heavy tasks vs CPU-intensive tasks.

I/O Heavy Tasks (simulated by sleeping for 5 secs between requests)

Apache Bench Result with 100 calls and 100 concurrent requests.

Ranked in order (fastest to slowest):

Golang Benchmark

Node.js Benchmark

Flask Benchmark

CPU-Intensive Tasks (simulated by running deeply-recursive fibonacci generator for the 45th fibonacci number)

Apache Bench Result with 5 calls and 5 concurrent requests.

Ranked in order (fastest to slowest):

Golang with Redis Cache Benchmark (Note, this is running 1000 requests and that it is calculating Fibonacci 90 instead of 45!)

Pure Golang Benchmark

Node.js with PM2 (multi-core/cluster mode) on 4 cores

Node.js without PM2 (single-threaded)

Python Flask using pypy just-in-time compiler instead of cpython (using cpython, which is the default, would be too slow to even test) and running only 2 requests (any amount of requests above 3 time-outs the AB test)