> Markdown version of [/events/world-congress-2026-europe/sessions/1044-speed-up-your-ci-cd](https://www.wearedevelopers.com/events/world-congress-2026-europe/sessions/1044-speed-up-your-ci-cd). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md).

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# Speed up your CI/CD pipelines by caching build & runtime artifacts


- **Date:** Thursday, Jul 9, 2026
- **Time:** 14:50–15:20 (30 min)
- **Room:** Stage 1
- **Event:** World Congress 2026 Europe

## Recording

[Watch recording](https://www.wearedevelopers.com/videos/100107-speed-up-your-ci-cd-pipelines-by-caching-build-runtime-artifacts)

## Description

Slow CI/CD pipelines delay code from reaching production and frustrate development teams. Beyond testing and compilation, a major bottleneck comes from repeatedly fetching dependencies from remote artifact repositories, a slowdown that also affects developers in their daily work.

This presentation will show how to eliminate these delays by caching build and runtime artifacts such as Docker images, NPM packages, Go modules, and even Git clones and fetches.

Since most artifact repositories deliver dependencies over HTTP, a reverse caching proxy like Varnish can dramatically accelerate artifact delivery at scale.

We’ll break down the actual HTTP requests behind docker pull, git clone, go get, and npm install, and demonstrate how Varnish can be configured to cache these assets effectively, without compromising access control or security.

We’ll also compare the power of an HTTP reverse caching proxy like Varnish to other optimization strategies such as disk caching & shallow fetches.

## Speaker

### [Thijs Feryn](https://www.wearedevelopers.com/@thijs-feryn)

Technical Evangelist at Varnish Software


## Related talks at this congress

- [Beyond the Thor’s Hammer: Pragmatic Agentic AI with Caching, Reuse, and Cost Guardrails](https://www.wearedevelopers.com/events/world-congress-2026-europe/sessions/951-beyond-the-thor-s) — Satej Sahu
- [Building a Better Tomorrow: Tips and Tricks for Docker Builds](https://www.wearedevelopers.com/events/world-congress-2026-europe/sessions/1000-building-a-better) — Daniel Bodky
- [AI Sandboxes:  Running Coding Agents Safely in Production-Grade Environments](https://www.wearedevelopers.com/events/world-congress-2026-europe/sessions/1236-ai-sandboxes-running) — Kristiyan Velkov, Shivay Lamba
- [Context is Money: Slashing RAG Production Costs with Foundry IQ](https://www.wearedevelopers.com/events/world-congress-2026-europe/sessions/1455-context-is-money) — Kiran Panchal