ehttpd

Welcome to ehttpd 🎉

ehttpd is a thread-based HTTP server library, which can be used to create custom HTTP server applications.

Thread-based design

The rationale behind the thread-based approach is that it is much easier to implement than async/await, subsequently requires less codes, and is – in theory – less error prone.

Furthermore, it also simplifies application development since the developer cannot accidentally stall the entire runtime with a single blocking call – via the OS' scheduler, threads offer much strong concurrency isolation guarantees, which in most environments can even be niced or tweaked if appropriate.

Performance

While the thread-based approach is not the most efficient out there, it's not that bad either. Some wrk benchmarks:

MacBook Pro (M1 Pro, helloworld)

$ wrk -t 64 -c 64 http://localhost:9999/testolope
Running 10s test @ http://localhost:9999/testolope
  64 threads and 64 connections
  Thread Stats   Avg      Stdev     Max   +/- Stdev
    Latency     0.98ms  346.32us  13.64ms   89.26%
    Req/Sec     1.03k   125.94     1.38k    70.02%
  662807 requests in 10.10s, 32.87MB read
Requests/sec:  65622.88
Transfer/sec:      3.25MB

Old Linux Machine (Intel(R) Core(TM) i5-2500K CPU @ 3.30GHz, helloworld-nokeepalive)

$ wrk -t 64 -c 64 http://localhost:9999/testolope
Running 10s test @ http://localhost:9999/testolope
  64 threads and 64 connections
  Thread Stats   Avg      Stdev     Max   +/- Stdev
    Latency     2.31ms    1.31ms  79.98ms   97.48%
    Req/Sec   419.80     73.74     2.03k    94.15%
  268421 requests in 10.10s, 18.18MB read
Requests/sec:  26579.74
Transfer/sec:      1.80MB