Commit Graph

10 Commits

Author SHA1 Message Date
Bryan Boreham 4dd3cbb4ab
API client: make http reads more efficient (#976)
Replace `io.ReadAll` with `bytes.Buffer.ReadFrom`.
Both need to resize a buffer until they have finished reading;
the former increases by 1.25x each time while the latter uses 2x.

Also added a benchmark to demonstrate the benefit:
name             old time/op    new time/op    delta
Client/4KB-8       35.9µs ± 4%    35.3µs ± 3%     ~     (p=0.310 n=5+5)
Client/50KB-8      83.1µs ± 8%    69.5µs ± 1%  -16.37%  (p=0.008 n=5+5)
Client/1000KB-8     891µs ± 6%     750µs ± 0%  -15.83%  (p=0.016 n=5+4)
Client/2000KB-8    1.74ms ± 2%    1.35ms ± 1%  -22.72%  (p=0.008 n=5+5)

name             old alloc/op   new alloc/op   delta
Client/4KB-8       20.2kB ± 0%    20.4kB ± 0%   +1.26%  (p=0.008 n=5+5)
Client/50KB-8       218kB ± 0%     136kB ± 0%  -37.65%  (p=0.008 n=5+5)
Client/1000KB-8    5.88MB ± 0%    2.11MB ± 0%  -64.10%  (p=0.008 n=5+5)
Client/2000KB-8    11.7MB ± 0%     4.2MB ± 0%  -63.93%  (p=0.008 n=5+5)

name             old allocs/op  new allocs/op  delta
Client/4KB-8         75.0 ± 0%      72.0 ± 0%   -4.00%  (p=0.008 n=5+5)
Client/50KB-8         109 ± 0%        98 ± 0%  -10.09%  (p=0.079 n=4+5)
Client/1000KB-8       617 ± 0%       593 ± 0%   -3.89%  (p=0.008 n=5+5)
Client/2000KB-8     1.13k ± 0%     1.09k ± 0%   -3.27%  (p=0.008 n=5+5)

Signed-off-by: Bryan Boreham <bjboreham@gmail.com>
2022-01-25 11:16:10 +01:00
Joe Elliott 393adc9261 Refactor ~worked. All tests passing except one
Signed-off-by: Joe Elliott <number101010@gmail.com>
2019-12-10 16:53:38 -05:00
Thomas Jackson 1335ef46bd Pass warnings through on non-error responses (#599)
Return warnings as a separate string slice to simplify handling.

Signed-off-by: Thomas Jackson <jacksontj.89@gmail.com>
2019-06-14 01:40:59 +02:00
Thomas Jackson 7e60220fd3 Switch from encoding/json -> jsoniter (#570)
* Switch from encoding/json -> jsoniter

Signed-off-by: Thomas Jackson <jacksontj.89@gmail.com>
2019-05-28 13:45:06 +02:00
Thomas Jackson a4daf0098c Implement POST with get fallback for Query/QueryRange (#557)
* Implement POST with get fallback for Query/QueryRange

Signed-off-by: Thomas Jackson <jacksontj.89@gmail.com>
2019-04-30 10:13:48 +03:00
Bjoern Rabenstein 1173d73405 Increase minimum required Go version to 1.9
This allows us to simplify a bunch of code while still supporting the
last four Go minor versions.

We have also run into minor annoyances a couple of times by now to
keep supporting 1.7 and 1.8.

It's time to pull the plug!

Signed-off-by: Bjoern Rabenstein <bjoern@rabenste.in>
2019-04-28 23:28:57 +02:00
Karsten Weiss 958ea82988 Fix typos
Signed-off-by: Karsten Weiss <knweiss@gmail.com>
2018-04-13 23:23:52 +02:00
André Carvalho 6fdb468212
api: add build tag for go 1.7 2017-04-24 18:05:17 -03:00
André Carvalho 09dcce7042
api: uses context from net/http
This commit removes the now unnecessary CancelableTransport and rely on
the net/http context support.
2017-04-20 10:31:18 -03:00
André Carvalho 349922b38c
api: creates versioned package for prometheus v1 api
This commit creates a new package to hold the prometheus
v1 API interface. This interface will contain all the funcionality
exposed by Prometheus v1 HTTP API.

The underlying http client is kept on the api package since it
may be reused across diferent API versions and also by the Alertmanager
api package (to come.)
2017-04-19 18:24:14 -03:00