Start with the bottleneck
Measure latency, throughput, database load, error rates and peak behaviour before proposing a technology change.
Choose the right pattern
Caching, session management, rate limiting, queues, streams and real-time counters solve different problems.
Design for correctness
Expiry, invalidation, fallback, persistence, access control and monitoring should be part of the first design.
Prove value
A focused PoC should compare a stable baseline with the proposed architecture under realistic load.
Next step
Define one measurable use case, establish the baseline and test the operating model before scaling.