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 code, 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 – due to the OS-scheduler, threads offer much stronger concurrency isolation guarantees (which can even be niced or tweaked in most environments if desired).

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)

ignore $ 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)

ignore $ 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