All apps employ two global middlewares with req mutations, an empty GET route handler for favicon.ico and a GET handler for the /users/:id, returning a User: {id} string response.
Results are taken after 1 warm-up run. The tool used for results is the following:
$ wrk -t8 -c100 -d30s http://localhost:3000/user/123Please remember that your application code is most likely the slowest part of your application!
Switching from Express to Polka will (likely) not guarantee the same performance gains.
#=> POLKA
Thread Stats Avg Stdev Max +/- Stdev
Latency 2.39ms 173.68us 7.90ms 89.40%
Req/Sec 5.03k 110.03 5.80k 70.42%
1204800 requests in 30.10s, 124.09MB read
Requests/sec: 40022.18
Transfer/sec: 4.12MB
#=> EXPRESS
Thread Stats Avg Stdev Max +/- Stdev
Latency 3.24ms 388.15us 9.84ms 92.78%
Req/Sec 3.72k 105.01 4.38k 63.96%
889146 requests in 30.01s, 111.08MB read
Requests/sec: 29623.83
Transfer/sec: 3.70MB
#=> POLKA
Thread Stats Avg Stdev Max +/- Stdev
Latency 2.59ms 186.29us 5.82ms 67.71%
Req/Sec 4.66k 142.28 5.29k 68.67%
1115653 requests in 30.10s, 114.91MB read
Requests/sec: 37059.21
Transfer/sec: 3.82MB
#=> EXPRESS
Thread Stats Avg Stdev Max +/- Stdev
Latency 3.41ms 347.21us 8.07ms 69.60%
Req/Sec 3.53k 104.84 3.91k 69.83%
844077 requests in 30.01s, 105.45MB read
Requests/sec: 28127.26
Transfer/sec: 3.51MB
#=> POLKA
Thread Stats Avg Stdev Max +/- Stdev
Latency 3.16ms 208.50us 6.93ms 75.13%
Req/Sec 3.82k 101.28 5.34k 75.58%
911888 requests in 30.01s, 93.92MB read
Requests/sec: 30384.16
Transfer/sec: 3.13MB
#=> EXPRESS
Thread Stats Avg Stdev Max +/- Stdev
Latency 4.61ms 289.07us 14.19ms 75.35%
Req/Sec 2.61k 62.88 2.92k 70.71%
623917 requests in 30.01s, 77.95MB read
Requests/sec: 20788.27
Transfer/sec: 2.60MB