[feature] simpler cache size configuration (#2051)

* add automatic cache max size generation based on ratios of a singular fixed memory target

Signed-off-by: kim <grufwub@gmail.com>

* remove now-unused cache max-size config variables

Signed-off-by: kim <grufwub@gmail.com>

* slight ratio tweak

Signed-off-by: kim <grufwub@gmail.com>

* remove unused visibility config var

Signed-off-by: kim <grufwub@gmail.com>

* add secret little ratio config trick

Signed-off-by: kim <grufwub@gmail.com>

* fixed a word

Signed-off-by: kim <grufwub@gmail.com>

* update cache library to remove use of TTL in result caches + slice cache

Signed-off-by: kim <grufwub@gmail.com>

* update other cache usages to use correct interface

Signed-off-by: kim <grufwub@gmail.com>

* update example config to explain the cache memory target

Signed-off-by: kim <grufwub@gmail.com>

* update env parsing test with new config values

Signed-off-by: kim <grufwub@gmail.com>

* do some ratio twiddling

Signed-off-by: kim <grufwub@gmail.com>

* add missing header

* update envparsing with latest defaults

Signed-off-by: kim <grufwub@gmail.com>

* update size calculations to take into account result cache, simple cache and extra map overheads

Signed-off-by: kim <grufwub@gmail.com>

* tweak the ratios some more

Signed-off-by: kim <grufwub@gmail.com>

* more nan rampaging

Signed-off-by: kim <grufwub@gmail.com>

* fix envparsing script

Signed-off-by: kim <grufwub@gmail.com>

* update cache library, add sweep function to keep caches trim

Signed-off-by: kim <grufwub@gmail.com>

* sweep caches once a minute

Signed-off-by: kim <grufwub@gmail.com>

* add a regular job to sweep caches and keep under 80% utilisation

Signed-off-by: kim <grufwub@gmail.com>

* remove dead code

Signed-off-by: kim <grufwub@gmail.com>

* add new size library used to libraries section of readme

Signed-off-by: kim <grufwub@gmail.com>

* add better explanations for the mem-ratio numbers

Signed-off-by: kim <grufwub@gmail.com>

* update go-cache

Signed-off-by: kim <grufwub@gmail.com>

* library version bump

Signed-off-by: kim <grufwub@gmail.com>

* update cache.result{} size model estimation

Signed-off-by: kim <grufwub@gmail.com>

---------

Signed-off-by: kim <grufwub@gmail.com>
This commit is contained in:
kim 2023-08-03 10:34:35 +01:00 committed by GitHub
commit 00adf18c24
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32 changed files with 2115 additions and 2330 deletions

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@ -25,7 +25,9 @@ import (
"os"
"os/signal"
"syscall"
"time"
"codeberg.org/gruf/go-sched"
"github.com/gin-gonic/gin"
"github.com/superseriousbusiness/gotosocial/cmd/gotosocial/action"
"github.com/superseriousbusiness/gotosocial/internal/api"
@ -117,6 +119,13 @@ var Start action.GTSAction = func(ctx context.Context) error {
state.Workers.Start()
defer state.Workers.Stop()
// Add a task to the scheduler to sweep caches.
// Frequency = 1 * minute
// Threshold = 80% capacity
sweep := func(time.Time) { state.Caches.Sweep(80) }
job := sched.NewJob(sweep).Every(time.Minute)
_ = state.Workers.Scheduler.Schedule(job)
// Build handlers used in later initializations.
mediaManager := media.NewManager(&state)
oauthServer := oauth.New(ctx, dbService)