Josh Bleecher Snyder b9c92b90db cmd/derper: optimize handleBootstrapDNS
Do json formatting once, rather than on every request.

Use an atomic.Value.

name                   old time/op    new time/op    delta
HandleBootstrapDNS-10    6.35µs ± 0%    0.10µs ± 4%  -98.35%  (p=0.000 n=14+15)

name                   old alloc/op   new alloc/op   delta
HandleBootstrapDNS-10    3.20kB ± 0%    0.42kB ± 0%  -86.99%  (p=0.000 n=12+15)

name                   old allocs/op  new allocs/op  delta
HandleBootstrapDNS-10      41.0 ± 0%       3.0 ± 0%  -92.68%  (p=0.000 n=15+15)

Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
2022-02-11 12:43:19 -08:00
..
2021-10-28 16:02:11 -07:00