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Fix system config cache expiration timing (#28072)
To avoid unnecessary database access, the `cacheTime` should always be set if the revision has been checked. Fix #28057
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@ -115,24 +115,26 @@ func (d *dbConfigCachedGetter) GetValue(ctx context.Context, key string) (v stri
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func (d *dbConfigCachedGetter) GetRevision(ctx context.Context) int {
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d.mu.RLock()
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defer d.mu.RUnlock()
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if time.Since(d.cacheTime) < time.Second {
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return d.revision
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}
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if GetRevision(ctx) != d.revision {
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cachedDuration := time.Since(d.cacheTime)
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cachedRevision := d.revision
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d.mu.RUnlock()
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if cachedDuration < time.Second {
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return cachedRevision
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}
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d.mu.Lock()
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defer d.mu.Unlock()
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if GetRevision(ctx) != d.revision {
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rev, set, err := GetAllSettings(ctx)
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if err != nil {
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log.Error("Unable to get all settings: %v", err)
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} else {
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d.cacheTime = time.Now()
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d.revision = rev
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d.settings = set
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}
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d.mu.Unlock()
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d.mu.RLock()
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}
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d.cacheTime = time.Now()
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return d.revision
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}
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