I recently wrote a reverse proxy in Go
- https://github.com/gptankit/serviceq which does load balancing and queues
failed requests (to dipatch later).
When I compared perf with nginx, I noticed 15-20 ms higher response times.
So, I timed each function, and got to know that the code spends most time
in 3 places -
Read from tcp conn
Save in a buffer
Write to tcp conn
'Save' is necessary addition as I need to re-run the requests. For 'Read'
and 'Write', I use bufio -
Read:
reader := bufio.NewReader(*httpConn.tcpConn)
req, err := http.ReadRequest(reader)
Write:
writer := bufio.NewWriter(*httpConn.tcpConn)
Why does Go impose me to read from bufio.Reader and not directly from
io.Reader? I understand the implication for bigger data but for few bytes,
managing a buffer seems like an overhead.
I am using Go 1.6.
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