How can you implement caching in web applications with different programming languages?

Caching is indeed a crucial aspect of optimizing web application performance. Types of Caching: Data Caching: Python: Python provides caching libraries like joblib or cachetools for caching function outputs or API responses. Java: In Java, tools like Ehcache or Caffeine can be used for caching data in memory. Node.js: node-cache or memory-cache modules are popular for caching in Node.js applications. Output Caching: PHP: PHP developers can use tools like Memcached or Redis to cache HTML, CSS, or even entire web pages. Ruby: In Ruby on Rails, caching can be achieved using built-in caching mechanisms or external tools like Dalli for Memcached.

It's a replication of data to be saved somewhere to be accessed faster rather getting data from slow pace again and again.We can consider there are different types of coaching available: Web Browser Caching Web Server Caching CDN Caching DataBase Caching Application Caching Hardware Caching

Amusing but true :A few percentage considers CDN’s as also caches but they are actually servers which are optimized for serving content in different regions of the world from the nearest location which made them fast . What happens with the CDN is you made the content available to CDN , according to the request CDN makes it available in each region specific server. Now if the client asks for the resources it is being severed from the nearest location.

Languages for Caching: Python: The functools.lru_cache decorator or external libraries like cachetools. Java: Libraries like Ehcache, Caffeine, or using Spring's caching annotations. Node.js: Caching can be implemented using modules like node-cache or memory-cache. PHP: Memcached or Redis extensions for PHP. Ruby: Caching in Ruby on Rails using built-in mechanisms or gems like Dalli.

Currently I faced issue with application performance so implementation was done for server side.The web server is when asked by the client sends the information that it saves in cache. Proxy cache servers are the building blocks of a CDN’s network data center which are strategically situated around the globe . Highly active user locations with numerous users may have several data centers . Cache header explained : Web developers use HTTP cache headers(cache-control) to mark cacheable web content & set cache duration . For example: “Cache-Control: max-age=3600” means that the file can be cached for no longer than an hour before it must be refetched from the origin content.