Varnish Cache Setup: Cache WordPress and Magento at

How Varnish Differs From Other Caches

Varnish is a reverse-proxy cache: it sits in front of your web server, stores full rendered pages in RAM, and answers repeat requests without touching PHP or MySQL. First request: cache MISS — Varnish fetches from the backend and stores it. Repeat requests: cache HIT — served straight from memory at microsecond scale.

Getting started:

1. Install — apt update && apt install varnish on Ubuntu/Debian
2. Configure VCL — backend address, TTLs, cache rules
3. Terminate TLS upstream — Nginx or a proxy in front, since stable Varnish speaks plain HTTP
4. Verify — add an X-Cache header in vcl_deliver and watch MISS→HIT
5. Purge on publish — plugin or varnishpur so updates show instantly

For most WordPress sites a page-cache plugin is the better effort-to-outcome ratio; Varnish earns its keep on high-traffic VPS server stacks. The OPcache guide covers the PHP-side half of the same speed story.

Installing Varnish (Linux Steps)

On Varnish Cache, the honest summary is that defaults matter more than brand names — a well-set budget plan outranks a mis-tuned premium one. WebJi® documents its defaults openly and adjusts them per ticket when workloads need it.

VCL Basics: Backend, TTL, Cache Rules

TTL is how long a resolver may cache a DNS answer. After an edit, people who cached the old record keep it until that timer ends, so the change can look instant for you and old everywhere else. Drop the TTL a day before a migration, make the change, and raise the TTL once you have confirmed the new target.

Placing Varnish Behind an HTTPS Proxy

How this plays out with reverse proxy caching in RAM: settings that look cosmetic usually decide page speed and uptime under real traffic. The defaults WebJi® ships are tuned for Indian network conditions, and support can review your setup on request.

Verifying Caching: X-Cache Headers

Put a cache in front of pages that do not change per visitor, and keep cart, checkout and account pages uncached. After a DNS or cache change, test in a private window so your own browser cache does not lie. Lower the DNS TTL a day before a move, then raise it once the new target is confirmed.

Purging Strategies After Updates

On X-Cache HIT/MISS headers, the honest summary is that defaults matter more than brand names — a well-set budget plan outranks a mis-tuned premium one. WebJi® documents its defaults openly and adjusts them per ticket when workloads need it.

Varnish vs Page-Cache Plugins: When to Use Which

On cache purge methods, the honest summary is that defaults matter more than brand names — a well-set budget plan outranks a mis-tuned premium one. WebJi® documents its defaults openly and adjusts them per ticket when workloads need it.