WatchlogWatchlog

WATCHLOG INTEGRATION

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Monitor Redis.

Monitor Redis memory usage, cache hit rate, eviction pressure, client connections, and command throughput in real time.

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24 metrics·Eviction + hit rate·30s setup

WHAT WATCHLOG COLLECTS

Complete Redis observability.

The Watchlog Agent collects these metrics automatically once the Redis integration is enabled.

used_memory
Used Memory
Bytes allocated by Redis for all stored data
mem_fragmentation_ratio
Memory Fragmentation Ratio
Ratio of OS-allocated to Redis-allocated memory (>1.5 = fragmented)
connected_clients
Connected Clients
Current open client connections
blocked_clients
Blocked Clients
Clients waiting on BLPOP, BRPOP, or WAIT
keyspace_hits / (hits + misses)
Keyspace Hit Rate
Percentage of key lookups that found a value
evicted_keys rate
Evicted Keys/sec
Keys forcibly removed due to maxmemory policy
expired_keys rate
Expired Keys/sec
Keys automatically expired by TTL per second
instantaneous_ops_per_sec
Commands Processed/sec
Total Redis commands executed per second
rejected_connections
Rejected Connections
Connections rejected because maxclients was reached
total_net_input_bytes | output
Network In / Out
Bytes read and written over the network per second
rdb_last_bgsave_status
RDB Save Status
Status of the last background RDB snapshot
role (master|slave)
Role
Whether this instance is primary or replica

LIVE DASHBOARD

Redis at a glance.

A pre-built Redis dashboard activates the moment you enable the integration — no configuration required.

● Redis DashboardLive
Used Memory
2.4 GB / 4 GB
Hit Rate
96.8%
Connected Clients
142
Evictions/min
0
Commands/sec
18,440
Fragmentation Ratio
1.12

USE CASES

What engineers use Redis monitoring for.

⌇
Cache efficiency monitoring
Track hit rate over time and get alerted when it drops — a sign of cache invalidation issues, key expiry misconfigurations, or growing dataset size.
▣
Memory pressure management
Monitor used_memory against maxmemory and eviction rate. Know when to scale before Redis starts dropping data.
◈
Slow command detection
Surface slow log entries to identify commands (KEYS, SMEMBERS on large sets) that block the Redis event loop.
⊕
Session store reliability
For auth session stores, monitor rejected connections, eviction events, and RDB save status to ensure data persistence.

WHY WATCHLOG

Fewer blind spots. Earlier warnings.

Engineering teams that monitor Redis with Watchlog catch failure signals before they become incidents.

  • ✓Catch hit rate drops that indicate application-level cache invalidation bugs
  • ✓Get alerted on evictions before they silently degrade application performance
  • ✓Monitor fragmentation ratio to decide when a restart or defrag is needed
  • ✓Track command throughput to detect unusual access patterns or client leaks
  • ✓Alert on rejected connections before users see login or session failures

QUICK SETUP

Redis monitoring in under 2 minutes.

No YAML. No config files. The Watchlog Agent detects Redis on your host and begins collecting immediately.

01
Install the Watchlog Agent
One command on your Redis host. The agent detects Redis on port 6379 automatically.
02
Enable Redis integration
Open Watchlog → Integrations → Redis and click Enable. No auth config required for open instances.
03
Dashboard live in 60s
Memory, hit rate, evictions, and client metrics appear immediately after enabling.
INSTALL WATCHLOG AGENT
sudo apiKey="$WATCHLOG_API_KEY" server="$WATCHLOG_SERVER" MEMORY="300M" bash -c "$(curl -L https://watchlog.io/ubuntu/watchlog-script.sh)

The agent automatically detects Redis running on your host and begins collecting metrics immediately.

GET STARTED

Start monitoring Redis now.

Full Redis visibility in under 2 minutes. No credit card required.

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Questions? Contact us at [email protected]