If you run a website, excessive load times can limit your traffic, lower your Google search rank and lessen your website’s overall potential. However, a best caching software can easily prevent this lag and the problems that accompany it. What’s more, they don’t have to be a hassle to set up and they’ll make visitors more likely to stay on your site. Have you ever think what if lots of users get online at a time then what happen ? Yes, Your site caching software start malfunction (If you use normal caching software) and loading increase in some cases also site breakdown temporarily. Today I will write about two advanced caching software/system varnish and redis caching .
What is Caching?
In a computing context, a cache is a place to temporarily store data.
Active data is often cached in order to reduce load times. When you return to a frequently accessed web site, chances are that your browser will have a good portion of the site’s files stored within its cache. This means that the browser needs to receive less ‘fresh’ information from the site, resulting in a faster load time.
The way caching plugins work is by saving the dynamically generated HTML files and serving them from the cache (i.e. reusing previously generated data) whenever a request is made, rather than loading all of the PHP scripts from the website every time you hit refresh.
The result is that your site loads far quicker for all its visitors.
What is Varnish Cache
Varnish Cache is a powerful open source HTTP engine/reverse HTTP proxy that can speed up a website by up to 1000 percent by doing exactly what its name implies: caching (or storing) a copy of a web page the first time user visits. Varnish Cache visits your server once to cache the page, then all future requests for the same page will be served by Varnish Cache. This means lightning-fast content delivery and fewer backend server resource requirements. Varnish Cache ensures a reduction in backend server load by up to 89 percent while handling an unlimited number of simultaneous visitors.
Features and Benefits of Varnish Cache
- Speed and performance are the heart of Varnish Cache
- Savings in server infrastructure
- Scalability – no matter the number of visitors or requests, Varnish Cache helps your site match the demand
- Protection against outages—if your server fails, Varnish Cache continues to serve cached content
- Flexibility – Varnish Configuration Language (VCL) builds customized solutions, rules, and module
- Improved end-user experience
Who should use varnish cache?
Anyone can use Varnish Cache, but it is especially useful for businesses that value speed, performance, scalability, and want to save on server infrastructure.
Varnish Cache is beneficial both to users who need basic functions and to very advanced users who have the expertise, time, and resources to build customized modules.
For more information click here
What is Redis Cache
Redis means REmote DIctionary Server. It is an open source (BSD licensed), in-memory data structure store, used as database, cache and message broker. It supports data structures such as strings, hashes, with range queries, bitmaps etc. Redis has built-in replication, Lua scripting, LRU eviction,transactions and different levels of on-disk persistence, and provides high availability via Redis Sentinel and automatic partitioning with Redis Cluster.
Redis is written in ANSI C and works in most POSIX systems like Linux, *BSD, OS X without external dependencies. Linux and OS X are the two operating systems where Redis is developed and more tested.
They recommend using Linux for deploying.
Features and Benefits of Redis Cache
- Its work in In-Memory Database :Depending on your use case, you can persist it either by dumping the dataset to disk every once in a while or by appending each command to a log. Persistence can be optionally disabled if you just need a feature-rich, networked, in-memory cache.
- supports trivial-to-setup master-slave asynchronous replication, with very fast non-blocking first synchronization, auto-reconnection with partial resynchronization on the net split.
Other features include:
- Lua scripting
- Keys with a limited time-to-live
- LRU eviction of keys
- Automatic failover
If you have any useful information about Varnish and Redis Cache the do comment let others know. Read here To learn more how they are different from others WordPress caching plugin.