E-Commerce: Caching & CDN
A well-configured caching stack makes your shop faster and significantly reduces server load — static pages don't hit the database on every request, assets are served from the nearest edge server, and users worldwide experience the same fast result. We implement multi-layer caching with Varnish or Shopware HTTP Cache, object caching with Redis, and CDN integration — coordinated and production-ready configured.
Challenges you'll recognise
- Your shop is slow even though the server is not under load — because Shopware renders from scratch for every request without caching results.
- Product images are served directly from the origin server, which causes high load times for international users and unnecessarily burdens the server.
- Performance drops during traffic spikes or after a newsletter send because the infrastructure isn't designed for sudden load increases.
HTTP Caching
The Shopware HTTP Cache or Varnish as a reverse proxy caches fully rendered pages and serves them from cache without touching the Shopware application. Correct cache-control headers, cache invalidation strategies for product changes, and ESI for dynamic content like shopping baskets are the building blocks of a production-ready HTTP caching configuration.
Redis for Object Caching
Sessions, product data, category structures, and expensive database queries can be cached in Redis and are available in milliseconds on the next request. We configure Redis as the central cache store for Shopware, calibrate TTL values for different data types, and implement cache tags for granular invalidation.
CDN Integration
Product images, CSS, JavaScript, and other static assets don't need to be served from the origin server. A CDN serves them from edge servers worldwide, reducing latency for international users and relieving your origin server. We configure CDN setups with correct cache headers, automatic image optimisation, and geographic routing.
Cache Invalidation
Caching only works when changes are reliably propagated. We implement cache invalidation logic that selectively invalidates affected cache entries when products, prices, or inventory change — without flushing the entire cache and losing the performance benefit. Shopware events are used to trigger invalidations automatically.
Good to know
Multi-layer caching is necessary
HTTP caching, object caching, and CDN solve different performance problems at different levels of the stack. Only the combination delivers truly low load times — a single caching layer is not sufficient for complex e-commerce shops.
Cache invalidation is the hard problem
Setting up caching is easy. Ensuring customers always see current data after a price or inventory change is the actual challenge. Incorrect cache invalidation manifests as phantom inventory or stale prices — and costs trust.
CDN measurably relieves the origin server
When static assets are served via CDN, the majority of asset requests never reach the origin server. This reduces bandwidth costs, relieves the server infrastructure, and improves load times for users far from the server location.
Frequently asked questions
What is the difference between HTTP caching and Redis caching?
How does caching work with personalised content like individual prices?
Which CDN do you recommend for Shopware?
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Success you can measure
With us you're always at the cutting edge of technology and benefit directly from our developer expertise. Together we analyze your shop, identify key areas and develop tailor-made solutions. Your goals and expectations are at the center of our work.
Developers, not resellers
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Shopware down to the detail
Architecture, API integration and performance from hundreds of project hours.
One team, every discipline
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