feat: Redis热数据+K线聚合+Dashboard MySQL指标修复

backend/pkg/redis/go_redis.go

@@ -64,3 +64,32 @@ func (r *goRedisCache) Ping(ctx context.Context) error {
 func (r *goRedisCache) Close() error {
 	return r.client.Close()
 }
+
+func (r *goRedisCache) ZAdd(ctx context.Context, key string, member SortedSetMember) error {
+	return r.client.ZAdd(ctx, key, goredis.Z{
+		Score:  member.Score,
+		Member: member.Member,
+	}).Err()
+}
+
+func (r *goRedisCache) ZRangeByScore(ctx context.Context, key string, min, max string) ([]SortedSetMember, error) {
+	zs, err := r.client.ZRangeByScoreWithScores(ctx, key, &goredis.ZRangeBy{
+		Min: min,
+		Max: max,
+	}).Result()
+	if err != nil {
+		return nil, err
+	}
+	members := make([]SortedSetMember, len(zs))
+	for i, z := range zs {
+		members[i] = SortedSetMember{
+			Score:  z.Score,
+			Member: z.Member.(string),
+		}
+	}
+	return members, nil
+}
+
+func (r *goRedisCache) ZRemRangeByScore(ctx context.Context, key string, min, max string) error {
+	return r.client.ZRemRangeByScore(ctx, key, min, max).Err()
+}

backend/pkg/redis/redis.go

@@ -34,6 +34,12 @@ type Config struct {
 	DataDir  string // redka 数据目录
 }
 
+// SortedSetMember 有序集合成员 // Logan.Li
+type SortedSetMember struct {
+	Score  float64
+	Member string
+}
+
 // Cache Redis 缓存接口 // Logan.Li
 type Cache interface {
 	Get(ctx context.Context, key string) (string, error)
@@ -43,6 +49,11 @@ type Cache interface {
 	Expire(ctx context.Context, key string, expiration time.Duration) error
 	Ping(ctx context.Context) error
 	Close() error
+
+	// 有序集合操作（热数据指标存储，仅 go-redis 后端完整支持）
+	ZAdd(ctx context.Context, key string, member SortedSetMember) error
+	ZRangeByScore(ctx context.Context, key string, min, max string) ([]SortedSetMember, error)
+	ZRemRangeByScore(ctx context.Context, key string, min, max string) error
 }
 
 // New 创建缓存实例（根据驱动自动选择后端）// Logan.Li

backend/pkg/redis/redka.go

@@ -5,6 +5,7 @@ package redis
 
 import (
 	"context"
+	"fmt"
 	"time"
 
 	"github.com/nalgeon/redka"
@@ -96,3 +97,17 @@ func (r *redkaCache) Ping(ctx context.Context) error {
 func (r *redkaCache) Close() error {
 	return r.db.Close()
 }
+
+var errSortedSetNotSupported = fmt.Errorf("sorted set operations are not supported by the redka backend; use go-redis (driver=redis) instead")
+
+func (r *redkaCache) ZAdd(ctx context.Context, key string, member SortedSetMember) error {
+	return errSortedSetNotSupported
+}
+
+func (r *redkaCache) ZRangeByScore(ctx context.Context, key string, min, max string) ([]SortedSetMember, error) {
+	return nil, errSortedSetNotSupported
+}
+
+func (r *redkaCache) ZRemRangeByScore(ctx context.Context, key string, min, max string) error {
+	return errSortedSetNotSupported
+}