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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,45 @@ | ||
| package GinRateLimit | ||
|
|
||
| import ( | ||
| "context" | ||
| "github.com/go-redis/redis/v8" | ||
| "time" | ||
| ) | ||
|
|
||
| type RedisStoreType struct { | ||
| rate int64 | ||
| limit int | ||
| client *redis.Client | ||
| ctx context.Context | ||
| } | ||
|
|
||
| func (s *RedisStoreType) Limit(key string) bool { | ||
| p := s.client.Pipeline() | ||
| defer func(s *RedisStoreType, p redis.Pipeliner) { | ||
| p.Exec(s.ctx) | ||
| p.Close() | ||
| }(s, p) | ||
| ts, err := s.client.Get(s.ctx, key+"ts").Int64() | ||
| if err != nil { | ||
| ts = time.Now().Unix() | ||
| } | ||
| hits, err := s.client.Get(s.ctx, key+"hits").Int64() | ||
| if err != nil { | ||
| hits = 0 | ||
| } | ||
| p.Expire(s.ctx, key+"hits", time.Duration(int64(time.Second)*s.rate*2)) | ||
| p.Expire(s.ctx, key+"ts", time.Duration(int64(time.Second)*s.rate*2)) | ||
| if ts+s.rate <= time.Now().Unix() { | ||
| p.Set(s.ctx, key+"hits", 0, time.Duration(0)) | ||
| } | ||
| if hits >= int64(s.limit) { | ||
| return true | ||
| } | ||
| p.Incr(s.ctx, key+"hits") | ||
| p.Set(s.ctx, key+"ts", time.Now().Unix(), time.Duration(0)) | ||
| return false | ||
| } | ||
|
|
||
| func RedisStore(rate time.Duration, limit int, redisClient *redis.Client) *RedisStoreType { | ||
| return &RedisStoreType{client: redisClient, rate: int64(rate.Seconds()), limit: limit, ctx: context.TODO()} | ||
| } |