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118
os/gcache/gcache_z_example_adapter_redis.go
Normal file
118
os/gcache/gcache_z_example_adapter_redis.go
Normal file
@ -0,0 +1,118 @@
|
||||
package gcache
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import (
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"context"
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"github.com/gogf/gf/v2/container/gvar"
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"github.com/gogf/gf/v2/database/gredis"
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"time"
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)
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// Redis is the gcache adapter implements using Redis server.
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type Redis struct {
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redis *gredis.Redis
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}
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// newAdapterMemory creates and returns a new memory cache object.
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func NewRedis(redis *gredis.Redis) Adapter {
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return &Redis{
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redis: redis,
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}
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}
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func (r Redis) Set(ctx context.Context, key interface{}, value interface{}, duration time.Duration) error {
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var err error
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if value == nil || duration < 0 {
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_, err = r.redis.Do(ctx,"DEL", key)
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} else {
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if duration == 0 {
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_, err = r.redis.Do(ctx,"SET", key, value)
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} else {
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_, err = r.redis.Do(ctx,"SETEX", key, uint64(duration.Seconds()), value)
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}
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}
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return err
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}
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func (r Redis) SetMap(ctx context.Context, data map[interface{}]interface{}, duration time.Duration) error {
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panic("implement me")
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}
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|
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func (r Redis) SetIfNotExist(ctx context.Context, key interface{}, value interface{}, duration time.Duration) (ok bool, err error) {
|
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panic("implement me")
|
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}
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|
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func (r Redis) SetIfNotExistFunc(ctx context.Context, key interface{}, f func() (interface{}, error), duration time.Duration) (ok bool, err error) {
|
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panic("implement me")
|
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}
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|
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func (r Redis) SetIfNotExistFuncLock(ctx context.Context, key interface{}, f func() (interface{}, error), duration time.Duration) (ok bool, err error) {
|
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panic("implement me")
|
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}
|
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|
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func (r Redis) Get(ctx context.Context, key interface{}) (*gvar.Var, error) {
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v, err := r.redis.Do(ctx,"GET", key)
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if err != nil {
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return nil, err
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}
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return v, nil
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}
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func (r Redis) GetOrSet(ctx context.Context, key interface{}, value interface{}, duration time.Duration) (result *gvar.Var, err error) {
|
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panic("implement me")
|
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}
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|
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func (r Redis) GetOrSetFunc(ctx context.Context, key interface{}, f func() (interface{}, error), duration time.Duration) (result *gvar.Var, err error) {
|
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panic("implement me")
|
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}
|
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|
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func (r Redis) GetOrSetFuncLock(ctx context.Context, key interface{}, f func() (interface{}, error), duration time.Duration) (result *gvar.Var, err error) {
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panic("implement me")
|
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}
|
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|
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func (r Redis) Contains(ctx context.Context, key interface{}) (bool, error) {
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panic("implement me")
|
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}
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|
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func (r Redis) Size(ctx context.Context) (size int, err error) {
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panic("implement me")
|
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}
|
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|
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func (r Redis) Data(ctx context.Context) (data map[interface{}]interface{}, err error) {
|
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panic("implement me")
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}
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func (r Redis) Keys(ctx context.Context) (keys []interface{}, err error) {
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panic("implement me")
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}
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func (r Redis) Values(ctx context.Context) (values []interface{}, err error) {
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panic("implement me")
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}
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|
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func (r Redis) Update(ctx context.Context, key interface{}, value interface{}) (oldValue *gvar.Var, exist bool, err error) {
|
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panic("implement me")
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}
|
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|
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func (r Redis) UpdateExpire(ctx context.Context, key interface{}, duration time.Duration) (oldDuration time.Duration, err error) {
|
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panic("implement me")
|
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}
|
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|
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func (r Redis) GetExpire(ctx context.Context, key interface{}) (time.Duration, error) {
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panic("implement me")
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}
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|
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func (r Redis) Remove(ctx context.Context, keys ...interface{}) (lastValue *gvar.Var, err error) {
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panic("implement me")
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}
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|
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func (r Redis) Clear(ctx context.Context) error {
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panic("implement me")
|
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}
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|
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func (r Redis) Close(ctx context.Context) error {
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panic("implement me")
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}
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|
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|
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|
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475
os/gcache/gcache_z_example_cache_test.go
Normal file
475
os/gcache/gcache_z_example_cache_test.go
Normal file
@ -0,0 +1,475 @@
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package gcache_test
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import (
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"fmt"
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"github.com/gogf/gf/v2/frame/g"
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"github.com/gogf/gf/v2/os/gcache"
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"time"
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)
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func ExampleNew() {
|
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//Create a cache object,
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//Of course, you can also easily use the gcache package method directly
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c := gcache.New()
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//Set cache without expiration
|
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c.Set(ctx, "k1", "v1", 0)
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//Get cache
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v, _ := c.Get(ctx, "k1")
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fmt.Println(v)
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//Get cache size
|
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n, _ := c.Size(ctx)
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fmt.Println(n)
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|
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//Does the specified key name exist in the cache
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b, _ := c.Contains(ctx, "k1")
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fmt.Println(b)
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//Delete and return the deleted key value
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fmt.Println(c.Remove(ctx, "k1"))
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// Close the cache object and let the GC reclaim resources
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//
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c.Close(ctx)
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// Output:
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// v1
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// 1
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// true
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// v1 <nil>
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}
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func ExampleCache_Set() {
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//Create a cache object,
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//Of course, you can also easily use the gcache package method directly
|
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c := gcache.New()
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//Set cache without expiration
|
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c.Set(ctx, "k1", g.Slice{1, 2, 3, 4, 5, 6, 7, 8, 9}, 0)
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//Get cache
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fmt.Println(c.Get(ctx, "k1"))
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// Output:
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// [1,2,3,4,5,6,7,8,9] <nil>
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}
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func ExampleCache_SetAdapters() {
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//Create a cache object,
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//Of course, you can also easily use the gcache package method directly
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c := gcache.New()
|
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|
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//SetAdapter changes the adapter for this cache. Be very note that, this setting function is not concurrent-safe,
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//which means you should not call this setting function concurrently in multiple goroutines.
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adapter := gcache.NewRedis(g.Redis())
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c.SetAdapter(adapter)
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//Set cache
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c.Set(ctx, "k1", g.Slice{1, 2, 3, 4, 5, 6, 7, 8, 9}, 0)
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// Reverse makes array with elements in reverse order.
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fmt.Println(c.Get(ctx, "k1"))
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// May Output:
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// [1,2,3,4,5,6,7,8,9] <nil>
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}
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func ExampleCache_SetIfNotExist() {
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|
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//Create a cache object,
|
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//Of course, you can also easily use the gcache package method directly
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c := gcache.New()
|
||||
|
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//Write when the key name does not exist, and set the expiration time to 1000 milliseconds
|
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k1, err := c.SetIfNotExist(ctx, "k1", "v1", 1000*time.Millisecond)
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fmt.Println(k1, err)
|
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|
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//Returns false when the key name already exists
|
||||
k2, err := c.SetIfNotExist(ctx, "k1", "v2", 1000*time.Millisecond)
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fmt.Println(k2, err)
|
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|
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//Print the current list of key values
|
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keys1, _ := c.Keys(ctx)
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fmt.Println(keys1)
|
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|
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//It does not expire if `duration` == 0. It deletes the `key` if `duration` < 0 or given `value` is nil.
|
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c.SetIfNotExist(ctx, "k1", 0, -10000)
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|
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// Wait 1 second for K1: V1 to expire automatically
|
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time.Sleep(time.Second)
|
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|
||||
// Print the current key value pair again and find that K1: V1 has expired
|
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keys2, _ := c.Keys(ctx)
|
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fmt.Println(keys2)
|
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|
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// Output:
|
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// true <nil>
|
||||
// false <nil>
|
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// [k1]
|
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// [<nil>]
|
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}
|
||||
|
||||
func ExampleCache_Sets() {
|
||||
|
||||
//Create a cache object,
|
||||
//Of course, you can also easily use the gcache package method directly
|
||||
c := gcache.New()
|
||||
|
||||
//map[interface{}]interface{}
|
||||
data := g.MapAnyAny{
|
||||
"k1": "v1",
|
||||
"k2": "v2",
|
||||
"k3": "v3",
|
||||
}
|
||||
|
||||
//Sets batch sets cache with key-value pairs by `data`, which is expired after `duration`.
|
||||
//It does not expire if `duration` == 0. It deletes the keys of `data` if `duration` < 0 or given `value` is nil.
|
||||
c.SetMap(ctx, data, 1000*time.Millisecond)
|
||||
|
||||
//Print the current key value pair
|
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data2, _ := c.Data(ctx)
|
||||
|
||||
//Gets the specified key value
|
||||
v1, _ := c.Get(ctx, "k1")
|
||||
|
||||
fmt.Println(data2, v1)
|
||||
|
||||
|
||||
// Output:
|
||||
// map[k1:v1 k2:v2 k3:v3] v1
|
||||
}
|
||||
|
||||
func ExampleCache_Size() {
|
||||
|
||||
//Create a cache object,
|
||||
//Of course, you can also easily use the gcache package method directly
|
||||
c := gcache.New()
|
||||
|
||||
// Add 10 elements without expiration
|
||||
for i := 0; i < 10; i++ {
|
||||
c.Set(ctx,i, i, 0)
|
||||
}
|
||||
|
||||
//Size returns the number of items in the cache.
|
||||
n, _ := c.Size(ctx)
|
||||
fmt.Println(n)
|
||||
|
||||
// Output:
|
||||
// 10
|
||||
}
|
||||
|
||||
func ExampleCache_Update(){
|
||||
|
||||
//Create a cache object,
|
||||
//Of course, you can also easily use the gcache package method directly
|
||||
c := gcache.New()
|
||||
|
||||
//Sets batch sets cache with key-value pairs by `data`, which is expired after `duration`.
|
||||
//It does not expire if `duration` == 0. It deletes the keys of `data` if `duration` < 0 or given `value` is nil.
|
||||
c.SetMap(ctx, g.MapAnyAny{"k1": "v1","k2":"v2","k3":"v3"}, 0)
|
||||
|
||||
//Print the current key value pair
|
||||
data, _ := c.Data(ctx)
|
||||
fmt.Println(data)
|
||||
|
||||
//Update updates the value of `key` without changing its expiration and returns the old value.
|
||||
re,exist,_ := c.Update(ctx,"k1","v11")
|
||||
fmt.Println(re,exist)
|
||||
|
||||
//The returned value `exist` is false if the `key` does not exist in the cache.
|
||||
//It does nothing if `key` does not exist in the cache.
|
||||
re1,exist1,_ := c.Update(ctx,"k4","v44")
|
||||
fmt.Println(re1,exist1)
|
||||
|
||||
|
||||
data1, _ := c.Data(ctx)
|
||||
fmt.Println(data1)
|
||||
// Output:
|
||||
// map[k1:v1 k2:v2 k3:v3]
|
||||
// v1 true
|
||||
// false
|
||||
// map[k1:v11 k2:v2 k3:v3]
|
||||
}
|
||||
|
||||
func ExampleCache_UpdateExpire(){
|
||||
|
||||
//Create a cache object,
|
||||
//Of course, you can also easily use the gcache package method directly
|
||||
c := gcache.New()
|
||||
|
||||
c.Set(ctx,"k1","v1",1000*time.Millisecond)
|
||||
k1_expire,_ := c.GetExpire(ctx,"k1")
|
||||
fmt.Println(k1_expire)
|
||||
|
||||
//UpdateExpire updates the expiration of `key` and returns the old expiration duration value.
|
||||
//It returns -1 and does nothing if the `key` does not exist in the cache.
|
||||
c.UpdateExpire(ctx,"k1",500*time.Millisecond)
|
||||
|
||||
k1_expires,_ := c.GetExpire(ctx,"k1")
|
||||
fmt.Println(k1_expires)
|
||||
// Output:
|
||||
// 1s
|
||||
// 500ms
|
||||
}
|
||||
|
||||
func ExampleCache_Values(){
|
||||
|
||||
//Create a cache object,
|
||||
//Of course, you can also easily use the gcache package method directly
|
||||
c := gcache.New()
|
||||
|
||||
//Write value
|
||||
c.Set(ctx,"k1",g.Map{"k1": "v1","k2":"v2"},0)
|
||||
c.Set(ctx,"k2","Here is Value2",0)
|
||||
c.Set(ctx,"k3",111,0)
|
||||
|
||||
//Values returns all values in the cache as slice.
|
||||
data,_ :=c.Values(ctx)
|
||||
fmt.Println(data)
|
||||
|
||||
// Output:
|
||||
// [map[k1:v1 k2:v2] Here is Value2 111]
|
||||
}
|
||||
|
||||
func ExampleCache_Close(){
|
||||
|
||||
//Create a cache object,
|
||||
//Of course, you can also easily use the gcache package method directly
|
||||
c := gcache.New()
|
||||
|
||||
//Set Cache
|
||||
c.Set(ctx,"k1","v",0)
|
||||
data,_ := c.Get(ctx,"k1")
|
||||
fmt.Println(data)
|
||||
|
||||
// Close closes the cache if necessary.
|
||||
c.Close(ctx)
|
||||
|
||||
data1,_ := c.Get(ctx,"k1")
|
||||
|
||||
fmt.Println(data1)
|
||||
|
||||
// Output:
|
||||
// v
|
||||
// v
|
||||
|
||||
}
|
||||
|
||||
func ExampleCache_Contains() {
|
||||
|
||||
//Create a cache object,
|
||||
//Of course, you can also easily use the gcache package method directly
|
||||
c := gcache.New()
|
||||
|
||||
//Set Cache
|
||||
c.Set(ctx,"k","v",0)
|
||||
|
||||
//Contains returns true if `key` exists in the cache, or else returns false.
|
||||
// return true
|
||||
data,_ := c.Contains(ctx,"k")
|
||||
fmt.Println(data)
|
||||
|
||||
// return false
|
||||
data1,_ := c.Contains(ctx,"k1")
|
||||
fmt.Println(data1)
|
||||
|
||||
// Output:
|
||||
// true
|
||||
// false
|
||||
|
||||
}
|
||||
|
||||
func ExampleCache_Data() {
|
||||
|
||||
//Create a cache object,
|
||||
//Of course, you can also easily use the gcache package method directly
|
||||
c := gcache.New()
|
||||
|
||||
c.SetMap(ctx,g.MapAnyAny{"k1": "v1","k2":"v2"},0)
|
||||
c.Set(ctx,"k5","v5",0)
|
||||
|
||||
//Data returns a copy of all key-value pairs in the cache as map type. Note that this function may lead lots of memory usage, you can implement this function if necessary.
|
||||
data,_ := c.Data(ctx)
|
||||
fmt.Println(data)
|
||||
|
||||
// Output:
|
||||
// map[k1:v1 k2:v2 k5:v5]
|
||||
}
|
||||
|
||||
func ExampleCache_Get(){
|
||||
|
||||
//Create a cache object,
|
||||
//Of course, you can also easily use the gcache package method directly
|
||||
c := gcache.New()
|
||||
|
||||
//Set Cache Object
|
||||
c.Set(ctx,"k1","v1",0)
|
||||
|
||||
//Get retrieves and returns the associated value of given `key`. It returns nil if it does not exist, its value is nil or it's expired.
|
||||
data,_ := c.Get(ctx,"k1")
|
||||
fmt.Println(data)
|
||||
|
||||
// Output:
|
||||
// v1
|
||||
}
|
||||
|
||||
func ExampleCache_GetExpire(){
|
||||
|
||||
//Create a cache object,
|
||||
//Of course, you can also easily use the gcache package method directly
|
||||
c := gcache.New()
|
||||
|
||||
// Set cache without expiration
|
||||
c.Set(ctx,"k","v",10000*time.Millisecond)
|
||||
|
||||
//GetExpire retrieves and returns the expiration of `key` in the cache.
|
||||
//It returns 0 if the `key` does not expire. It returns -1 if the `key` does not exist in the cache.
|
||||
data,_ := c.GetExpire(ctx,"k")
|
||||
fmt.Println(data)
|
||||
|
||||
// Output:
|
||||
// 10s
|
||||
}
|
||||
|
||||
func ExampleCache_GetOrSet(){
|
||||
|
||||
//Create a cache object,
|
||||
//Of course, you can also easily use the gcache package method directly
|
||||
c := gcache.New()
|
||||
|
||||
//GetOrSet retrieves and returns the value of `key`, or sets `key`-`value` pair and returns `value` if `key` does not exist in the cache.
|
||||
data,_ := c.GetOrSet(ctx,"k","v",10000*time.Millisecond)
|
||||
fmt.Println(data)
|
||||
|
||||
data1,_ := c.Get(ctx,"k")
|
||||
fmt.Println(data1)
|
||||
|
||||
// Output:
|
||||
// v
|
||||
// v
|
||||
|
||||
}
|
||||
|
||||
func ExampleCache_GetOrSetFunc(){
|
||||
|
||||
//Create a cache object,
|
||||
//Of course, you can also easily use the gcache package method directly
|
||||
c := gcache.New()
|
||||
|
||||
//GetOrSetFunc retrieves and returns the value of `key`, or sets `key` with result of function `f` and returns its result if `key` does not exist in the cache.
|
||||
c.GetOrSetFunc(ctx,1,func() (interface{}, error) {
|
||||
return 111, nil
|
||||
}, 10000*time.Millisecond)
|
||||
v, _ := c.Get(ctx, 1)
|
||||
fmt.Println(v)
|
||||
|
||||
//but it does nothing if `value` is a function and the function result is nil.
|
||||
c.GetOrSetFunc(ctx,2,func() (interface{}, error) {
|
||||
return nil, nil
|
||||
}, 10000*time.Millisecond)
|
||||
v1, _ := c.Get(ctx, 2)
|
||||
fmt.Println(v1)
|
||||
|
||||
// Output:
|
||||
// 111
|
||||
//
|
||||
}
|
||||
|
||||
func ExampleCache_GetOrSetFuncLock(){
|
||||
//Create a cache object,
|
||||
//Of course, you can also easily use the gcache package method directly
|
||||
c := gcache.New()
|
||||
|
||||
// Modify locking Note that the function `f` should be executed within writing mutex lock for concurrent safety purpose.
|
||||
c.GetOrSetFuncLock(ctx, 1, func() (interface{}, error) {
|
||||
return 11, nil
|
||||
}, 0)
|
||||
v, _ := c.Get(ctx, 1)
|
||||
fmt.Println(v)
|
||||
|
||||
// Modification failed
|
||||
c.GetOrSetFuncLock(ctx, 1, func() (interface{}, error) {
|
||||
return 111, nil
|
||||
}, 0)
|
||||
v, _ = c.Get(ctx, 1)
|
||||
fmt.Println(v)
|
||||
|
||||
c.Remove(ctx, g.Slice{1, 2, 3}...)
|
||||
|
||||
// Modify locking
|
||||
c.GetOrSetFuncLock(ctx, 1, func() (interface{}, error) {
|
||||
return 111, nil
|
||||
}, 0)
|
||||
v, _ = c.Get(ctx, 1)
|
||||
fmt.Println(v)
|
||||
|
||||
// Modification failed
|
||||
c.GetOrSetFuncLock(ctx, 1, func() (interface{}, error) {
|
||||
return 11, nil
|
||||
}, 0)
|
||||
v, _ = c.Get(ctx, 1)
|
||||
fmt.Println(v)
|
||||
|
||||
// Output:
|
||||
// 11
|
||||
// 11
|
||||
// 111
|
||||
// 111
|
||||
}
|
||||
|
||||
func ExampleCache_Keys(){
|
||||
//Create a cache object,
|
||||
//Of course, you can also easily use the gcache package method directly
|
||||
c := gcache.New()
|
||||
|
||||
c.SetMap(ctx,g.MapAnyAny{"k1": "v1", "k2": "v2"},0)
|
||||
|
||||
//Print the current list of key values
|
||||
keys1, _ := c.Keys(ctx)
|
||||
fmt.Println(keys1)
|
||||
|
||||
// Output:
|
||||
// [k1 k2]
|
||||
|
||||
}
|
||||
|
||||
func ExampleCache_Remove() {
|
||||
//Create a cache object,
|
||||
//Of course, you can also easily use the gcache package method directly
|
||||
c := gcache.New()
|
||||
|
||||
c.SetMap(ctx,g.MapAnyAny{"k1": "v1", "k2": "v2","k3":"v3","k4":"v4"},0)
|
||||
|
||||
//Remove deletes one or more keys from cache, and returns its value. If multiple keys are given, it returns the value of the last deleted item.
|
||||
c.Remove(ctx,"k1")
|
||||
|
||||
data, _ := c.Data(ctx)
|
||||
fmt.Println(data)
|
||||
|
||||
// Output:
|
||||
// map[k2:v2 k3:v3 k4:v4]
|
||||
}
|
||||
|
||||
func ExampleCache_Removes(){
|
||||
//Create a cache object,
|
||||
//Of course, you can also easily use the gcache package method directly
|
||||
c := gcache.New()
|
||||
|
||||
c.SetMap(ctx,g.MapAnyAny{"k1": "v1", "k2": "v2","k3":"v3","k4":"v4"},0)
|
||||
|
||||
//Remove deletes one or more keys from cache, and returns its value. If multiple keys are given, it returns the value of the last deleted item.
|
||||
c.Removes(ctx, g.Slice{"k1", "k3"})
|
||||
|
||||
data, _ := c.Data(ctx)
|
||||
fmt.Println(data)
|
||||
|
||||
// Output:
|
||||
// map[k2:v2 k4:v4]
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user