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VictoriaMetrics/app/vmselect
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Aliaksandr Valialkin 41a0fdaf39
app/vmselect/promql: optimize repeated SLI-like instant queries with lookbehind windows >= 1d 
Repeated instant queries with long lookbehind windows, which contain one of the following rollup functions,
are optimized via partial result caching:

- sum_over_time()
- count_over_time()
- avg_over_time()
- increase()
- rate()

The basic idea of optimization is to calculate

  rf(m[d] @ t)

as

  rf(m[offset] @ t) + rf(m[d] @ (t-offset)) - rf(m[offset] @ (t-d))

where rf(m[d] @ (t-offset)) is cached query result, which was calculated previously

The offset may be in the range of up to 1 hour.
2023-10-31 19:25:23 +01:00
..
graphite all: consistently use %w instead of %s in when error is passed to fmt.Errorf() 2023-10-25 21:24:03 +02:00
graphiteql app,lib: fix typos in comments (#3804) 2023-02-13 13:27:13 +01:00
netstorage app/vmselect: limit the number of parallel workers by 32 (#5195) 2023-10-18 19:51:37 +02:00
prometheus all: consistently use %w instead of %s in when error is passed to fmt.Errorf() 2023-10-25 21:24:03 +02:00
promql app/vmselect/promql: optimize repeated SLI-like instant queries with lookbehind windows >= 1d 2023-10-31 19:25:23 +01:00
querystats app/vmselect: do not track queries with less than 1ms execution time at /api/v1/status/top_queries 2021-07-15 16:44:28 +03:00
searchutils all: add support for or filters in series selectors 2023-07-16 00:06:33 -07:00
vmui app/vmui: change the order of tables at Top queries tab 2023-10-28 11:56:16 +02:00
main.go app/{vmselect,vlselect}: enable caching of static contents from /vmui/static/ folder at client side 2023-10-12 09:33:40 +02:00
README.md app/vmui: move source code from https://github.com/VictoriaMetrics/vmui to app/vmui 2021-07-09 17:15:23 +03:00
vmui.go lib/fs: add MustReadDir() function 2023-04-14 22:10:46 -07:00

README.md

vmselect performs the incoming queries and fetches the required data from vmstorage.

The vmui directory contains static contents built from app/vmui package with make vmui-update command. The vmui page is available at http://<victoria-metrics>:8428/vmui/.