// FlushStaleStats deletes all stale statistics in Redis.

// window defines the duration after which the statistics become stale.
// largeWindow defines the duration after which the statistics are permanently deleted.

storage/redis.go

@@ -343,7 +343,6 @@ func convertPoolChartsResults(raw *redis.ZSliceCmd) []*PoolCharts {
 	return reverse
 }
 
-
 func (r *RedisClient) GetNetCharts(netHashLen int64) (stats []*NetCharts, err error) {
 	tx := r.client.Multi()
 	defer tx.Close()
@@ -1105,30 +1104,41 @@ func convertStringMap(m map[string]string) map[string]interface{} {
 	return result
 }
 
-// WARNING: Must run it periodically to flush out of window hashrate entries
+// FlushStaleStats deletes all stale statistics in Redis.
-func (r *RedisClient) FlushStaleStats(window, largeWindow time.Duration) (int64, error) {
+// window defines the duration after which the statistics become stale.
+// largeWindow defines the duration after which the statistics are permanently deleted.
+func (r *RedisClient) FlushStaleStats(staleDuration, largeWindow time.Duration) (int64, error) {
+	// Convert the current timestamp to seconds
 	now := util.MakeTimestamp() / 1000
-	max := fmt.Sprint("(", now-int64(window/time.Second))
+	// Define the maximum expiry date for stale statistics
-	total, err := r.client.ZRemRangeByScore(r.formatKey("hashrate"), "-inf", max).Result()
+	maxStale := fmt.Sprint("(", now-int64(staleDuration/time.Second))
+
+	// Delete all stale statistics from the "hashrate" hash
+	total, err := r.client.ZRemRangeByScore(r.formatKey("hashrate"), "-inf", maxStale).Result()
 	if err != nil {
 		return total, err
 	}
 
-	var c int64
+	var cursor int64
+	// Use a map to ensure that each miner is only processed once
 	miners := make(map[string]struct{})
-	max = fmt.Sprint("(", now-int64(largeWindow/time.Second))
+	// Define the maximum expiry date for the statistics to be deleted permanently
+	maxFinal := fmt.Sprint("(", now-int64(largeWindow/time.Second))
 
+	// Iterate over all hash keys starting with "hashrate", and delete all stale statistics for each miner
 	for {
 		var keys []string
 		var err error
-		c, keys, err = r.client.Scan(c, r.formatKey("hashrate", "*"), 100).Result()
+		cursor, keys, err = r.client.Scan(cursor, r.formatKey("hashrate", "*"), 100).Result()
 		if err != nil {
 			return total, err
 		}
-		for _, row := range keys {
+		for _, key := range keys {
-			login := strings.Split(row, ":")[2]
+			// Extract the miner name from the key
+			login := strings.Split(key, ":")[2]
 			if _, ok := miners[login]; !ok {
-				n, err := r.client.ZRemRangeByScore(r.formatKey("hashrate", login), "-inf", max).Result()
+				// Delete all stale statistics for this miner
+				n, err := r.client.ZRemRangeByScore(r.formatKey("hashrate", login), "-inf", maxFinal).Result()
 				if err != nil {
 					return total, err
 				}
@@ -1136,7 +1146,8 @@ func (r *RedisClient) FlushStaleStats(window, largeWindow time.Duration) (int64,
 				total += n
 			}
 		}
-		if c == 0 {
+		// If we've processed all keys, exit the loop
+		if cursor == 0 {
 			break
 		}
 	}