5.4 Redis Memory Optimization

1. Underlying Encoding of Aggregate Data Types

When hash, list, and set consist only of integers, and when the number of zset elements is below a certain value, special encodings are used. This can be configured in redis.conf.

hash-max-ziplist-entries 512
hash-max-ziplist-value 64
zset-max-ziplist-entries 128
zset-max-ziplist-value 64
set-max-intset-entries 512

2. Use a 32-Bit Instance

Redis compiled on a 32-bit machine uses less memory than on 64-bit, and a 32-bit instance can run on a 64-bit machine.

3. Configure Maximum Memory

Configure maxmemory and maxmemory-policy in redis.conf.

4. References

• Redis