عرض عملي: تخزين تفاصيل المنتج مؤقتًا باستخدام @Cacheable

خطوة بخطوة

1. Add the Redis starter and a RedisCacheManager with a 10-minute TTL for products.
2. Annotate findProduct with @Cacheable and the update method with @CacheEvict.
3. Enable cache statistics and read hits/misses in Micrometer (verify the metric names for your Spring Boot version).
4. Run a load test; compare latency with and without the cache.
5. Planned mistake: cache a Product entity that is not Serializable and uses Java serialization; it fails or breaks on a class change. Fix: cache a small DTO with JSON serialization.
6. Show the keys with SCAN 0 MATCH products::*.

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