Complex Event Processing Platform
Systems that continuously evaluate event streams to detect temporal patterns, correlations, and windowed conditions for real-time decisions and alerts.
In Memory Database
An in-memory database keeps the working set in RAM for sub-millisecond reads/writes, typically adding durability via logs/snapshots and HA via replication/sharding.
Apache ZooKeeper
A centralized coordination service for distributed systems providing configuration management, leader election, distributed locking, and service discovery
Redis
In-memory data structure store designed for high-performance caching, sessions, and real-time applications