Cache Invalidation Strategies
Cache invalidation is crucial in systems that use caching to enhance performance. When data is cached, it’s stored temporarily for quicker access. However, if the original data changes, the cached version becomes outdated. Cache invalidation mechanisms ensure that outdated entries are refreshed or removed, guaranteeing that users receive up-to-date information.
- Common strategies include time-based expiration, where cached data is discarded after a certain time, and event-driven invalidation, triggered by changes to the underlying data.
- Proper cache invalidation optimizes performance and avoids serving users with obsolete or inaccurate content from the cache.
Caching – System Design Concept
Caching is a system design concept that involves storing frequently accessed data in a location that is easily and quickly accessible. The purpose of caching is to improve the performance and efficiency of a system by reducing the amount of time it takes to access frequently accessed data.
Important Topics for Caching in System Design
- What is Caching
- How Does Cache Work?
- Where Cache can be added?
- key points to understand Caching
- Types of Cache
- Applications of Caching
- What are the Advantages of using Caching?
- What are the Disadvantages of using Caching?
- Cache Invalidation Strategies
- Eviction Policies of Caching