Thijs Feryn

HTTP headers that make your website go faster

Imagine serving content instantly while fetching a fresh version in the background. Discover how modern caching headers can eliminate wait times for your users.

HTTP headers that make your website go faster
#1about 5 minutes

Why reverse caching proxies are essential for performance

A reverse caching proxy sits between users and your origin server to protect it from overload and accelerate content delivery.

#2about 5 minutes

Understanding the basic Cache-Control header directives

The Cache-Control header uses directives like public, private, and max-age to define caching scope and duration for browsers and shared caches.

#3about 2 minutes

Using s-maxage to set different cache durations

The s-maxage directive allows you to set a specific time-to-live (TTL) for shared caches, which overrides the general max-age directive.

#4about 5 minutes

Optimizing revalidation with conditional requests

Use ETag and Last-Modified headers to enable conditional requests, allowing servers to respond with a 304 Not Modified to save bandwidth and resources.

#5about 3 minutes

Improving resilience by serving stale content

The stale-while-revalidate and stale-if-error directives allow caches to serve stale content while revalidating in the background or during origin failures.

#6about 3 minutes

Controlling strictness and preventing caching

Use directives like must-revalidate, no-cache, and no-store to enforce strict content freshness or prevent caching altogether for sensitive data.

#7about 2 minutes

Using the Vary header for content negotiation

The Vary header instructs caches to store different versions of a resource based on request headers like Accept-Language, enabling content negotiation.

#8about 2 minutes

Controlling multi-tier caches with surrogate headers

Surrogate-Control and Surrogate-Capability headers provide granular control over multi-tier caches and enable advanced edge computing features.

#9about 3 minutes

Composing pages at the edge with Edge Side Includes

Edge Side Includes (ESI) allow you to assemble web pages from different fragments at the cache layer, each with its own caching policy.

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Matching moments

Implementing an HTTP reverse proxy cache with Varnish
05:43 MIN

Implementing an HTTP reverse proxy cache with Varnish

Advanced Caching Patterns used by 2000 microservices

Optimizing cache efficiency with a dedicated sharded layer
01:31 MIN

Optimizing cache efficiency with a dedicated sharded layer

Scaling: from 0 to 20 million users

Leveraging caching and edge computing for efficiency
01:32 MIN

Leveraging caching and edge computing for efficiency

Sustainable me. A tale of good design.

Q&A on caching strategies and implementation details
12:03 MIN

Q&A on caching strategies and implementation details

Advanced Caching Patterns used by 2000 microservices

Moving to the cloud and implementing Varnish cache
02:46 MIN

Moving to the cloud and implementing Varnish cache

Scaling: from 0 to 20 million users

Re-evaluating the performance benefits of using a CDN
01:59 MIN

Re-evaluating the performance benefits of using a CDN

WeAreDevelopers LIVE: Scammer Payback with Python, Grok Goes Unhinged, The Future of Chromium and mo

Reducing server load with build steps and caching
03:41 MIN

Reducing server load with build steps and caching

Sleek, Swift, and Sustainable: Optimizations every web developer should consider

Building offline-ready apps with a robust caching strategy
03:50 MIN

Building offline-ready apps with a robust caching strategy

Scalable architecture for mobile apps

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