General
PromptBeginner5 minmarkdown
### Memcached (Distributed
Multi-threaded)
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General
PromptBeginner5 minmarkdown
- Monitor with `INFO` command metrics: `keyspace_hits`
`keyspace_misses`
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General
PromptBeginner5 minmarkdown
- Configure `maxmemory-policy` per instance based on workload (allkeys-lfu for general caching
volatile-ttl for mixed workloads)
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Data
PromptBeginner5 minmarkdown
- Leverage Redis data structures (Sorted Sets
HyperLogLog
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General
PromptBeginner5 minmarkdown
### Redis (Clusters
Sentinel
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General
PromptBeginner5 minmarkdown
- Enable compression (LZ4
Snappy) for large values where CPU overhead is acceptable
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General
PromptBeginner5 minmarkdown
- Choose binary serialization (Protocol Buffers
MessagePack) over JSON for reduced size and faster parsing
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Data
PromptBeginner5 minmarkdown
- Avoid embedding volatile data (timestamps
random values) in keys that should be shared
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Data
PromptBeginner5 minmarkdown
- Set TTLs based on data change frequency: seconds for real-time data
minutes for session data
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General
PromptBeginner5 minmarkdown
- Use hierarchical namespaced keys (e.g.
`app:user:123:profile`) for logical grouping and bulk invalidation
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Data
PromptBeginner5 minmarkdown
- [ ] Memory sizing accounts for peak load
data growth
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General
PromptBeginner5 minmarkdown
- [ ] Monitoring covers hit rates
latency
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General
PromptBeginner5 minmarkdown
- [ ] Security controls (TLS
authentication
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Business
PromptBeginner5 minmarkdown
After designing or modifying a caching strategy
verify:
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Data
PromptBeginner5 minmarkdown
- [ ] Cache hit rates meet target thresholds (typically >90% for hot data
>70% for warm data)
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General
PromptBeginner5 minmarkdown
- Create benchmark suite measuring cache hit rates
latency percentiles (p50
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General
PromptBeginner5 minmarkdown
- Define alerting thresholds for cache health (hit rate drops
latency spikes
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General
PromptBeginner5 minmarkdown
- **Security**: Encryption in transit (TLS)
authentication (Redis AUTH
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General
PromptBeginner5 minmarkdown
- **Cost optimization**: Right-sizing cache instances
tiered storage (hot/warm/cold)
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General
PromptBeginner5 minmarkdown
- Document cache key schema with namespaces
versioning
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General
PromptBeginner5 minmarkdown
- **High availability**: Redis Sentinel or Cluster mode
Memcached replication
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Business
PromptBeginner5 minmarkdown
- **Memory management**: Eviction policy selection
maxmemory configuration
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General
PromptBeginner5 minmarkdown
- **Hot key mitigation**: Local caching of hot keys
key replication across shards
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General
PromptBeginner5 minmarkdown
- **Cache stampede prevention**: Mutex locks
probabilistic early expiration
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