Redis, Caching, Cache Invalidation, Distributed Cache, Cache Coherence.
(product != null) { // Cache the product price with a short expiration (e.g., 1 minute) redisTemplate.opsForValue().set(cacheKey, product.getPrice().toString()); return product.getPrice(); } return BigDecimal.ZERO; // Handle if the product doesn't exist } } RedisConfig.java (Configuration for Redis