Why Cache? Introduction to Caching
Understand the benefits of caching, common caching problems, and where Redis fits into a caching strategy.
What is Caching?
Caching is like having a temporary, super-fast storage space for frequently used data. Instead of fetching data from its original, slower source every single time, we store a copy closer to where it's needed.
This makes accessing that data much, much faster!
The Performance Bottleneck
Imagine your application needs to display a user's profile or a product catalog. Each time a user requests this, your app might have to:
- Query a database (which can be slow).
- Call an external API (adding network delay).
These delays are often called 'bottlenecks' because they slow down your application.
All lessons in this course
- Why Cache? Introduction to Caching
- Implementing Basic Cache Patterns
- Cache Eviction and Expiration
- Preventing Cache Stampedes and Thundering Herds