Your Redis is running out of memory. How do you handle this without data loss?

Investigation: 1) INFO memory: check used_memory, peak_memory, mem_fragmentation_ratio. 2) redis-cli --bigkeys: find largest keys consuming most memory. 3) MEMORY USAGE key: check specific key sizes. 4) Immediate actions: 5) Set maxmemory if not set: CONFIG SET maxmemory 4gb. 6) Set eviction policy: CONFIG SET maxmemory-policy allkeys-lru (for cache). 7) OBJECT ENCODING key: check if using memory-