Implement regex matcher cache on Store gateway: (#6491)

* Implement regex matcher cache on SG

Signed-off-by: alanprot <[email protected]>

* changelog

Signed-off-by: alanprot <[email protected]>

* lint

Signed-off-by: alanprot <[email protected]>

---------

Signed-off-by: alanprot <[email protected]>

Author: alanprot

CHANGELOG.md

@@ -21,7 +21,7 @@
 * [FEATURE] Ruler: Add support for per-user external labels #6340
 * [FEATURE] Query Frontend: Support a metadata federated query when `-tenant-federation.enabled=true`. #6461
 * [FEATURE] Query Frontend: Support an exemplar federated query when `-tenant-federation.enabled=true`. #6455
-* [FEATURE] Ingester: Add support for cache query matchers via `-ingester.matchers-cache-max-items. #6477
+* [FEATURE] Ingester/StoreGateway: Add support for cache regex query matchers via `-ingester.matchers-cache-max-items` and `-blocks-storage.bucket-store.matchers-cache-max-items`. #6477 #6491
 * [ENHANCEMENT] Querier: Add a `-tenant-federation.max-concurrent` flags to configure the number of worker processing federated query and add a `cortex_querier_federated_tenants_per_query` histogram to track the number of tenants per query. #6449
 * [ENHANCEMENT] Query Frontend: Add a number of series in the query response to the query stat log. #6423
 * [ENHANCEMENT] Store Gateway: Add a hedged request to reduce the tail latency. #6388

docs/blocks-storage/querier.md

@@ -1341,6 +1341,10 @@ blocks_storage:
       # CLI flag: -blocks-storage.bucket-store.metadata-cache.bucket-index-max-size-bytes
       [bucket_index_max_size_bytes: <int> | default = 1048576]
 
+    # Maximum number of entries in the regex matchers cache. 0 to disable.
+    # CLI flag: -blocks-storage.bucket-store.matchers-cache-max-items
+    [matchers_cache_max_items: <int> | default = 0]
+
     # Duration after which the blocks marked for deletion will be filtered out
     # while fetching blocks. The idea of ignore-deletion-marks-delay is to
     # ignore blocks that are marked for deletion with some delay. This ensures

docs/blocks-storage/store-gateway.md

@@ -1445,6 +1445,10 @@ blocks_storage:
       # CLI flag: -blocks-storage.bucket-store.metadata-cache.bucket-index-max-size-bytes
       [bucket_index_max_size_bytes: <int> | default = 1048576]
 
+    # Maximum number of entries in the regex matchers cache. 0 to disable.
+    # CLI flag: -blocks-storage.bucket-store.matchers-cache-max-items
+    [matchers_cache_max_items: <int> | default = 0]
+
     # Duration after which the blocks marked for deletion will be filtered out
     # while fetching blocks. The idea of ignore-deletion-marks-delay is to
     # ignore blocks that are marked for deletion with some delay. This ensures

docs/configuration/config-file-reference.md

@@ -1879,6 +1879,10 @@ bucket_store:
     # CLI flag: -blocks-storage.bucket-store.metadata-cache.bucket-index-max-size-bytes
     [bucket_index_max_size_bytes: <int> | default = 1048576]
 
+  # Maximum number of entries in the regex matchers cache. 0 to disable.
+  # CLI flag: -blocks-storage.bucket-store.matchers-cache-max-items
+  [matchers_cache_max_items: <int> | default = 0]
+
   # Duration after which the blocks marked for deletion will be filtered out
   # while fetching blocks. The idea of ignore-deletion-marks-delay is to ignore
   # blocks that are marked for deletion with some delay. This ensures store can
@@ -3182,7 +3186,7 @@ instance_limits:
 # CLI flag: -ingester.disable-chunk-trimming
 [disable_chunk_trimming: <boolean> | default = false]
 
-# Maximum number of entries in the matchers cache. 0 to disable.
+# Maximum number of entries in the regex matchers cache. 0 to disable.
 # CLI flag: -ingester.matchers-cache-max-items
 [matchers_cache_max_items: <int> | default = 0]
 ```

pkg/ingester/ingester.go

@@ -177,7 +177,7 @@ func (cfg *Config) RegisterFlags(f *flag.FlagSet) {
 	f.BoolVar(&cfg.LabelsStringInterningEnabled, "ingester.labels-string-interning-enabled", false, "Experimental: Enable string interning for metrics labels.")
 
 	f.BoolVar(&cfg.DisableChunkTrimming, "ingester.disable-chunk-trimming", false, "Disable trimming of matching series chunks based on query Start and End time. When disabled, the result may contain samples outside the queried time range but select performances may be improved. Note that certain query results might change by changing this option.")
-	f.IntVar(&cfg.MatchersCacheMaxItems, "ingester.matchers-cache-max-items", 0, "Maximum number of entries in the matchers cache. 0 to disable.")
+	f.IntVar(&cfg.MatchersCacheMaxItems, "ingester.matchers-cache-max-items", 0, "Maximum number of entries in the regex matchers cache. 0 to disable.")
 }
 
 func (cfg *Config) Validate() error {
@@ -719,7 +719,7 @@ func New(cfg Config, limits *validation.Overrides, registerer prometheus.Registe
 
 	if cfg.MatchersCacheMaxItems > 0 {
 		r := prometheus.NewRegistry()
-		registerer.MustRegister(newMatchCacheMetrics(r, logger))
+		registerer.MustRegister(cortex_tsdb.NewMatchCacheMetrics("cortex_ingester", r, logger))
 		i.matchersCache, err = storecache.NewMatchersCache(storecache.WithSize(cfg.MatchersCacheMaxItems), storecache.WithPromRegistry(r))
 		if err != nil {
 			return nil, err

pkg/ingester/ingester_test.go

@@ -159,21 +159,21 @@ func TestMatcherCache(t *testing.T) {
 	}
 
 	require.NoError(t, testutil.GatherAndCompare(registry, bytes.NewBufferString(fmt.Sprintf(`
-				# HELP ingester_matchers_cache_evicted_total Total number of items evicted from the cache
-				# TYPE ingester_matchers_cache_evicted_total counter
-				ingester_matchers_cache_evicted_total 1
-				# HELP ingester_matchers_cache_hits_total Total number of cache hits for series matchers
-				# TYPE ingester_matchers_cache_hits_total counter
-				ingester_matchers_cache_hits_total %v
-				# HELP ingester_matchers_cache_items Total number of cached items
-				# TYPE ingester_matchers_cache_items gauge
-				ingester_matchers_cache_items %v
-				# HELP ingester_matchers_cache_max_items Maximum number of items that can be cached
-				# TYPE ingester_matchers_cache_max_items gauge
-				ingester_matchers_cache_max_items 50
-				# HELP ingester_matchers_cache_requests_total Total number of cache requests for series matchers
-				# TYPE ingester_matchers_cache_requests_total counter
-				ingester_matchers_cache_requests_total %v
+				# HELP cortex_ingester_matchers_cache_evicted_total Total number of items evicted from the cache
+				# TYPE cortex_ingester_matchers_cache_evicted_total counter
+				cortex_ingester_matchers_cache_evicted_total 1
+				# HELP cortex_ingester_matchers_cache_hits_total Total number of cache hits for series matchers
+				# TYPE cortex_ingester_matchers_cache_hits_total counter
+				cortex_ingester_matchers_cache_hits_total %v
+				# HELP cortex_ingester_matchers_cache_items Total number of cached items
+				# TYPE cortex_ingester_matchers_cache_items gauge
+				cortex_ingester_matchers_cache_items %v
+				# HELP cortex_ingester_matchers_cache_max_items Maximum number of items that can be cached
+				# TYPE cortex_ingester_matchers_cache_max_items gauge
+				cortex_ingester_matchers_cache_max_items 50
+				# HELP cortex_ingester_matchers_cache_requests_total Total number of cache requests for series matchers
+				# TYPE cortex_ingester_matchers_cache_requests_total counter
+				cortex_ingester_matchers_cache_requests_total %v
 	`, callPerMatcher*numberOfDifferentMatchers-numberOfDifferentMatchers, cfg.MatchersCacheMaxItems, callPerMatcher*numberOfDifferentMatchers)), "ingester_matchers_cache_requests_total", "ingester_matchers_cache_hits_total", "ingester_matchers_cache_items", "ingester_matchers_cache_max_items", "ingester_matchers_cache_evicted_total"))
 }
 

pkg/ingester/metrics.go

@@ -1,8 +1,6 @@
 package ingester
 
 import (
-	"github.com/go-kit/log"
-	"github.com/go-kit/log/level"
 	"github.com/prometheus/client_golang/prometheus"
 	"github.com/prometheus/client_golang/prometheus/promauto"
 
@@ -678,71 +676,3 @@ func (sm *tsdbMetrics) setRegistryForUser(userID string, registry *prometheus.Re
 func (sm *tsdbMetrics) removeRegistryForUser(userID string) {
 	sm.regs.RemoveUserRegistry(userID, false)
 }
-
-type matcherCacheMetrics struct {
-	r      *prometheus.Registry
-	logger log.Logger
-
-	requestsTotal *prometheus.Desc
-	hitsTotal     *prometheus.Desc
-	numItems      *prometheus.Desc
-	maxItems      *prometheus.Desc
-	evicted       *prometheus.Desc
-}
-
-func newMatchCacheMetrics(r *prometheus.Registry, l log.Logger) *matcherCacheMetrics {
-	m := &matcherCacheMetrics{
-		r:      r,
-		logger: l,
-		requestsTotal: prometheus.NewDesc(
-			"ingester_matchers_cache_requests_total",
-			"Total number of cache requests for series matchers",
-			nil, nil),
-		hitsTotal: prometheus.NewDesc(
-			"ingester_matchers_cache_hits_total",
-			"Total number of cache hits for series matchers",
-			nil, nil),
-		numItems: prometheus.NewDesc(
-			"ingester_matchers_cache_items",
-			"Total number of cached items",
-			nil, nil),
-		maxItems: prometheus.NewDesc(
-			"ingester_matchers_cache_max_items",
-			"Maximum number of items that can be cached",
-			nil, nil),
-		evicted: prometheus.NewDesc(
-			"ingester_matchers_cache_evicted_total",
-			"Total number of items evicted from the cache",
-			nil, nil),
-	}
-	return m
-}
-
-func (m *matcherCacheMetrics) Describe(out chan<- *prometheus.Desc) {
-	out <- m.requestsTotal
-	out <- m.hitsTotal
-	out <- m.numItems
-	out <- m.maxItems
-	out <- m.evicted
-}
-
-func (m *matcherCacheMetrics) Collect(out chan<- prometheus.Metric) {
-	gm, err := m.r.Gather()
-	if err != nil {
-		level.Warn(m.logger).Log("msg", "failed to gather metrics from registry", "err", err)
-		return
-	}
-
-	mfm, err := util.NewMetricFamilyMap(gm)
-
-	if err != nil {
-		level.Warn(m.logger).Log("msg", "failed to create metric family map", "err", err)
-		return
-	}
-
-	out <- prometheus.MustNewConstMetric(m.requestsTotal, prometheus.CounterValue, mfm.SumCounters("thanos_matchers_cache_requests_total"))
-	out <- prometheus.MustNewConstMetric(m.hitsTotal, prometheus.CounterValue, mfm.SumCounters("thanos_matchers_cache_hits_total"))
-	out <- prometheus.MustNewConstMetric(m.numItems, prometheus.GaugeValue, mfm.SumGauges("thanos_matchers_cache_items"))
-	out <- prometheus.MustNewConstMetric(m.maxItems, prometheus.GaugeValue, mfm.SumGauges("thanos_matchers_cache_max_items"))
-	out <- prometheus.MustNewConstMetric(m.evicted, prometheus.CounterValue, mfm.SumCounters("thanos_matchers_cache_evicted_total"))
-}

pkg/storage/tsdb/config.go

@@ -275,6 +275,7 @@ type BucketStoreConfig struct {
 	IndexCache               IndexCacheConfig    `yaml:"index_cache"`
 	ChunksCache              ChunksCacheConfig   `yaml:"chunks_cache"`
 	MetadataCache            MetadataCacheConfig `yaml:"metadata_cache"`
+	MatchersCacheMaxItems    int                 `yaml:"matchers_cache_max_items"`
 	IgnoreDeletionMarksDelay time.Duration       `yaml:"ignore_deletion_mark_delay"`
 	IgnoreBlocksWithin       time.Duration       `yaml:"ignore_blocks_within"`
 	BucketIndex              BucketIndexConfig   `yaml:"bucket_index"`
@@ -373,6 +374,7 @@ func (cfg *BucketStoreConfig) RegisterFlags(f *flag.FlagSet) {
 	f.Float64Var(&cfg.TokenBucketBytesLimiter.TouchedSeriesTokenFactor, "blocks-storage.bucket-store.token-bucket-bytes-limiter.touched-series-token-factor", 25, "Multiplication factor used for touched series token")
 	f.Float64Var(&cfg.TokenBucketBytesLimiter.FetchedChunksTokenFactor, "blocks-storage.bucket-store.token-bucket-bytes-limiter.fetched-chunks-token-factor", 0, "Multiplication factor used for fetched chunks token")
 	f.Float64Var(&cfg.TokenBucketBytesLimiter.TouchedChunksTokenFactor, "blocks-storage.bucket-store.token-bucket-bytes-limiter.touched-chunks-token-factor", 1, "Multiplication factor used for touched chunks token")
+	f.IntVar(&cfg.MatchersCacheMaxItems, "blocks-storage.bucket-store.matchers-cache-max-items", 0, "Maximum number of entries in the regex matchers cache. 0 to disable.")
 }
 
 // Validate the config.

pkg/storage/tsdb/matchers_cache_metrics.go

@@ -0,0 +1,79 @@
+package tsdb
+
+import (
+	"fmt"
+
+	"github.com/go-kit/log"
+	"github.com/go-kit/log/level"
+	"github.com/prometheus/client_golang/prometheus"
+
+	"github.com/cortexproject/cortex/pkg/util"
+)
+
+type MatcherCacheMetrics struct {
+	r      *prometheus.Registry
+	logger log.Logger
+
+	requestsTotal *prometheus.Desc
+	hitsTotal     *prometheus.Desc
+	numItems      *prometheus.Desc
+	maxItems      *prometheus.Desc
+	evicted       *prometheus.Desc
+}
+
+func NewMatchCacheMetrics(prefix string, r *prometheus.Registry, l log.Logger) *MatcherCacheMetrics {
+	m := &MatcherCacheMetrics{
+		r:      r,
+		logger: l,
+		requestsTotal: prometheus.NewDesc(
+			fmt.Sprintf("%v_matchers_cache_requests_total", prefix),
+			"Total number of cache requests for series matchers",
+			nil, nil),
+		hitsTotal: prometheus.NewDesc(
+			fmt.Sprintf("%v_matchers_cache_hits_total", prefix),
+			"Total number of cache hits for series matchers",
+			nil, nil),
+		numItems: prometheus.NewDesc(
+			fmt.Sprintf("%v_matchers_cache_items", prefix),
+			"Total number of cached items",
+			nil, nil),
+		maxItems: prometheus.NewDesc(
+			fmt.Sprintf("%v_matchers_cache_max_items", prefix),
+			"Maximum number of items that can be cached",
+			nil, nil),
+		evicted: prometheus.NewDesc(
+			fmt.Sprintf("%v_matchers_cache_evicted_total", prefix),
+			"Total number of items evicted from the cache",
+			nil, nil),
+	}
+	return m
+}
+
+func (m *MatcherCacheMetrics) Describe(out chan<- *prometheus.Desc) {
+	out <- m.requestsTotal
+	out <- m.hitsTotal
+	out <- m.numItems
+	out <- m.maxItems
+	out <- m.evicted
+}
+
+func (m *MatcherCacheMetrics) Collect(out chan<- prometheus.Metric) {
+	gm, err := m.r.Gather()
+	if err != nil {
+		level.Warn(m.logger).Log("msg", "failed to gather metrics from registry", "err", err)
+		return
+	}
+
+	mfm, err := util.NewMetricFamilyMap(gm)
+
+	if err != nil {
+		level.Warn(m.logger).Log("msg", "failed to create metric family map", "err", err)
+		return
+	}
+
+	out <- prometheus.MustNewConstMetric(m.requestsTotal, prometheus.CounterValue, mfm.SumCounters("thanos_matchers_cache_requests_total"))
+	out <- prometheus.MustNewConstMetric(m.hitsTotal, prometheus.CounterValue, mfm.SumCounters("thanos_matchers_cache_hits_total"))
+	out <- prometheus.MustNewConstMetric(m.numItems, prometheus.GaugeValue, mfm.SumGauges("thanos_matchers_cache_items"))
+	out <- prometheus.MustNewConstMetric(m.maxItems, prometheus.GaugeValue, mfm.SumGauges("thanos_matchers_cache_max_items"))
+	out <- prometheus.MustNewConstMetric(m.evicted, prometheus.CounterValue, mfm.SumCounters("thanos_matchers_cache_evicted_total"))
+}

pkg/storegateway/bucket_stores.go

@@ -56,6 +56,9 @@ type BucketStores struct {
 	// Index cache shared across all tenants.
 	indexCache storecache.IndexCache
 
+	// Matchers cache shared across all tenants
+	matcherCache storecache.MatchersCache
+
 	// Chunks bytes pool shared across all tenants.
 	chunksPool pool.Pool[byte]
 
@@ -140,6 +143,17 @@ func NewBucketStores(cfg tsdb.BlocksStorageConfig, shardingStrategy ShardingStra
 		}),
 	}
 
+	u.matcherCache = storecache.NoopMatchersCache
+
+	if cfg.BucketStore.MatchersCacheMaxItems > 0 {
+		r := prometheus.NewRegistry()
+		reg.MustRegister(tsdb.NewMatchCacheMetrics("cortex_storegateway", r, logger))
+		u.matcherCache, err = storecache.NewMatchersCache(storecache.WithSize(cfg.BucketStore.MatchersCacheMaxItems), storecache.WithPromRegistry(r))
+		if err != nil {
+			return nil, err
+		}
+	}
+
 	// Init the index cache.
 	if u.indexCache, err = tsdb.NewIndexCache(cfg.BucketStore.IndexCache, logger, reg); err != nil {
 		return nil, errors.Wrap(err, "create index cache")
@@ -600,8 +614,10 @@ func (u *BucketStores) getOrCreateStore(userID string) (*store.BucketStore, erro
 	}
 
 	bucketStoreReg := prometheus.NewRegistry()
+
 	bucketStoreOpts := []store.BucketStoreOption{
 		store.WithLogger(userLogger),
+		store.WithMatchersCache(u.matcherCache),
 		store.WithRequestLoggerFunc(func(ctx context.Context, logger log.Logger) log.Logger {
 			return util_log.HeadersFromContext(ctx, logger)
 		}),