给 Reporter 增加缓存类型方法

Author: FishGoddess

FUTURE.md

@@ -17,9 +17,10 @@
 * [x] 提供定时缓存时间的机制，可选快速时钟
 * [x] 增加缓存名字配置，主要用于区分每个监控数据的来源
 * [x] 给 Reporter 增加缓存分片数量方法，主要用于监控缓存分片数量
-* [ ] 给 Reporter 增加缓存类型方法，主要用于监控不同类型的缓存情况
+* [x] 给 Reporter 增加缓存类型方法，主要用于监控不同类型缓存的使用情况
 * [ ] ~~增加对不存在的数据做防穿透的机制~~
   经过实践，这个更适合业务方自己处理，所以这边就先去掉了
+* [ ] 完善监控上报器，提供更多缓存信息查询的方法
 * [ ] 提供一个清空并设置全量值的方法，方便定时数据的全量替换
 
 ### v0.3.x

HISTORY.md

@@ -1,5 +1,11 @@
 ## ✒ 历史版本的特性介绍 (Features in old versions)
 
+### v0.4.10
+
+> 此版本发布于 2023-05-10
+
+* 给 Reporter 增加缓存类型方法，主要用于监控不同类型缓存的使用情况
+
 ### v0.4.9
 
 > 此版本发布于 2023-05-09

README.en.md

@@ -97,6 +97,7 @@ func main() {
 	// Use NewCacheWithReport to create a cache with report.
 	cache, reporter := cachego.NewCacheWithReport(cachego.WithCacheName("test"))
 	fmt.Println(reporter.CacheName())
+	fmt.Println(reporter.CacheType())
 }
 ```
 

README.md

@@ -96,6 +96,7 @@ func main() {
 	// Use NewCacheWithReport to create a cache with report.
 	cache, reporter := cachego.NewCacheWithReport(cachego.WithCacheName("test"))
 	fmt.Println(reporter.CacheName())
+	fmt.Println(reporter.CacheType())
 }
 ```
 

_examples/basic.go

@@ -73,4 +73,5 @@ func main() {
 	// Use NewCacheWithReport to create a cache with report.
 	cache, reporter := cachego.NewCacheWithReport(cachego.WithCacheName("test"))
 	fmt.Println(reporter.CacheName())
+	fmt.Println(reporter.CacheType())
 }

_examples/report.go

@@ -40,16 +40,21 @@ func reportLoad(reporter *cachego.Reporter, key string, value interface{}, ttl t
 }
 
 func main() {
-	// We provide some reporting points for monitor cache.
-	// ReportMissed reports the missed key getting from cache.
-	// ReportHit reports the hit entry getting from cache.
-	// ReportGC reports the status of cache gc.
-	// ReportLoad reports the result of loading.
-	// Use NewCacheWithReport to create a cache with report.
+	// We provide some ways to report the status of cache.
+	// Use NewCacheWithReport to create a cache with reporting features.
 	cache, reporter := cachego.NewCacheWithReport(
+		// Sometimes you may have several caches in one service.
+		// You can set each name by WithCacheName and get the name from reporter.
+		cachego.WithCacheName("test"),
+
+		// For testing...
 		cachego.WithMaxEntries(3),
 		cachego.WithGC(100*time.Millisecond),
 
+		// ReportMissed reports the missed key getting from cache.
+		// ReportHit reports the hit entry getting from cache.
+		// ReportGC reports the status of cache gc.
+		// ReportLoad reports the result of loading.
 		cachego.WithReportMissed(reportMissed),
 		cachego.WithReportHit(reportHit),
 		cachego.WithReportGC(reportGC),
@@ -76,17 +81,14 @@ func main() {
 
 	fmt.Println(value, err)
 
-	// These are some methods of reporter.
+	// These are some useful methods of reporter.
+	fmt.Println("CacheName:", reporter.CacheName())
+	fmt.Println("CacheType:", reporter.CacheType())
 	fmt.Println("CountMissed:", reporter.CountMissed())
 	fmt.Println("CountHit:", reporter.CountHit())
 	fmt.Println("CountGC:", reporter.CountGC())
 	fmt.Println("CountLoad:", reporter.CountLoad())
 	fmt.Println("CacheSize:", reporter.CacheSize())
 	fmt.Println("MissedRate:", reporter.MissedRate())
 	fmt.Println("HitRate:", reporter.HitRate())
-
-	// Sometimes you may have several caches in one service.
-	// You can set each name by WithCacheName and get the name from reporter.
-	cachego.WithCacheName("test")
-	reporter.CacheName()
 }

cache.go

@@ -28,30 +28,44 @@ const (
 )
 
 const (
-	_ cacheType = iota
-
 	// standard cache is a simple cache with locked map.
 	// It evicts entries randomly if cache size reaches to max entries.
-	standard
+	standard CacheType = "standard"
 
 	// lru cache is a cache using lru to evict entries.
 	// More details see https://en.wikipedia.org/wiki/Cache_replacement_policies#Least_recently_used_(LRU).
-	lru
+	lru CacheType = "lru"
 
 	// lfu cache is a cache using lfu to evict entries.
 	// More details see https://en.wikipedia.org/wiki/Cache_replacement_policies#Least-frequently_used_(LFU).
-	lfu
+	lfu CacheType = "lfu"
 )
 
 var (
-	newCaches = map[cacheType]func(conf *config) Cache{
+	newCaches = map[CacheType]func(conf *config) Cache{
 		standard: newStandardCache,
 		lru:      newLRUCache,
 		lfu:      newLFUCache,
 	}
 )
 
-type cacheType = uint8
+// CacheType is the type of cache.
+type CacheType string
+
+// IsStandard returns if cache type is standard.
+func (ct CacheType) IsStandard() bool {
+	return ct == standard
+}
+
+// IsLRU returns if cache type is lru.
+func (ct CacheType) IsLRU() bool {
+	return ct == lru
+}
+
+// IsLFU returns if cache type is lfu.
+func (ct CacheType) IsLFU() bool {
+	return ct == lfu
+}
 
 // Cache is the core interface of cachego.
 // We provide some implements including standard cache and sharding cache.

cache_test.go

@@ -25,6 +25,21 @@ const (
 	maxTestEntries = 10
 )
 
+// go test -v -cover -run=^TestCacheType$
+func TestCacheType(t *testing.T) {
+	if !standard.IsStandard() {
+		t.Error("!standard.IsStandard()")
+	}
+
+	if !lru.IsLRU() {
+		t.Error("!standard.IsLRU()")
+	}
+
+	if !lfu.IsLFU() {
+		t.Error("!standard.IsLFU()")
+	}
+}
+
 type testCache struct {
 	cache
 	count int32

config.go

@@ -18,7 +18,7 @@ import "time"
 
 type config struct {
 	cacheName    string
-	cacheType    cacheType
+	cacheType    CacheType
 	shardings    int
 	singleflight bool
 	gcDuration   time.Duration

doc.go

@@ -68,6 +68,7 @@ Package cachego provides an easy way to use foundation for your caching operatio
 	// Use NewCacheWithReport to create a cache with report.
 	cache, reporter := cachego.NewCacheWithReport(cachego.WithCacheName("test"))
 	fmt.Println(reporter.CacheName())
+	fmt.Println(reporter.CacheType())
 
 2. ttl:
 
@@ -351,16 +352,21 @@ Package cachego provides an easy way to use foundation for your caching operatio
 		fmt.Printf("report: load key %s value %+v ttl %s, err %+v, load count %d\n", key, value, ttl, err, reporter.CountLoad())
 	}
 
-	// We provide some reporting points for monitor cache.
-	// ReportMissed reports the missed key getting from cache.
-	// ReportHit reports the hit entry getting from cache.
-	// ReportGC reports the status of cache gc.
-	// ReportLoad reports the result of loading.
-	// Use NewCacheWithReport to create a cache with report.
+	// We provide some ways to report the status of cache.
+	// Use NewCacheWithReport to create a cache with reporting features.
 	cache, reporter := cachego.NewCacheWithReport(
+		// Sometimes you may have several caches in one service.
+		// You can set each name by WithCacheName and get the name from reporter.
+		cachego.WithCacheName("test"),
+
+		// For testing...
 		cachego.WithMaxEntries(3),
 		cachego.WithGC(100*time.Millisecond),
 
+		// ReportMissed reports the missed key getting from cache.
+		// ReportHit reports the hit entry getting from cache.
+		// ReportGC reports the status of cache gc.
+		// ReportLoad reports the result of loading.
 		cachego.WithReportMissed(reportMissed),
 		cachego.WithReportHit(reportHit),
 		cachego.WithReportGC(reportGC),
@@ -387,7 +393,9 @@ Package cachego provides an easy way to use foundation for your caching operatio
 
 	fmt.Println(value, err)
 
-	// These are some methods of reporter.
+	// These are some useful methods of reporter.
+	fmt.Println("CacheName:", reporter.CacheName())
+	fmt.Println("CacheType:", reporter.CacheType())
 	fmt.Println("CountMissed:", reporter.CountMissed())
 	fmt.Println("CountHit:", reporter.CountHit())
 	fmt.Println("CountGC:", reporter.CountGC())
@@ -396,11 +404,6 @@ Package cachego provides an easy way to use foundation for your caching operatio
 	fmt.Println("MissedRate:", reporter.MissedRate())
 	fmt.Println("HitRate:", reporter.HitRate())
 
-	// Sometimes you may have several caches in one service.
-	// You can set each name by WithCacheName and get the name from reporter.
-	cachego.WithCacheName("test")
-	reporter.CacheName()
-
 9. task:
 
 	var (
@@ -477,4 +480,4 @@ Package cachego provides an easy way to use foundation for your caching operatio
 package cachego // import "github.com/FishGoddess/cachego"
 
 // Version is the version string representation of cachego.
-const Version = "v0.4.9"
+const Version = "v0.4.10"