AI reliability requires different SLOs
In this webinar clip, Alex Nauda, CTO of Nobl9, explains how keeping AI reliable means changing how you look at SLOs.
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We test our own critical dependencies
Even if you know a dependency is critical, you still should test it. Otherwise, who knows what will happen if it goes down?
Recommended Experiments for Production Resilience in Harness Chaos Engineering | Harness Blog
This guide covers battle-tested chaos experiments for Kubernetes, AWS, Azure, and GCP to help you validate production resilience before real failures happen. Start with low blast radius experiments (pod-level) and gradually progress to higher impact scenarios (node/zone failures), always defining clear hypotheses and using probes to measure results. Building reliable distributed systems isn't just about writing good code. It's about understanding how your systems behave when things go wrong.
AI reliability changes how you watch your systems
In this clip from an AI roundtable with Gremlin, Nobl9, and PagerDuty, Mandi Walls talks about how AI shifts how you watch your systems to keep them reliable.
Chaos Engineering strengthens your team
Reliability testing not only strengthens your system, it also strengthens your team.
Chaos Engineering Training: Network Experiments
Learn how to test your application's resilience to network issues with Harness Chaos Engineering. This tutorial covers essential network chaos experiments. Discover how to simulate real-world network conditions to identify weaknesses and validate your system's behavior under degraded connectivity.
Chaos Engineering Training: Zonal, Regional Failures and SSL/TLS Certificates Expiration
Learn how to test your system's resilience against critical infrastructure failures. This tutorial demonstrates how to simulate zonal and regional outages to validate your high availability setup, plus how to test SSL/TLS certificate expiration scenarios. Essential for ensuring your applications can handle real-world failure conditions and maintain uptime during certificate-related issues.
Chaos Engineering Training: Chaos Hub, Experiment Templates, Import as Local Copy and Reference
Learn how to leverage Chaos Hub in Harness Chaos Engineering to accelerate your resilience testing. This tutorial covers browsing the Chaos Hub for pre-built experiments, understanding experiment templates, and two key workflows: importing experiments as local copies for customization or referencing them directly from the hub. Perfect for teams looking to quickly implement chaos experiments without building from scratch.
Improving reliability starts with the 10 most common failures
Failures will occur, but reliability testing helps us understand them instead of being surprised. Gremlin founder and CEO Kolton Andrus sat down with Stephen Townshend on the Slight Reliability podcast to talk about how!
How to test application resiliency by simulating the Cloudflare December 2025 outage
This fall and winter have had their share of major outages (including AWS, Azure, and Cloudflare), and December was no exception. On December 5, 2025, Cloudflare suffered a 25-minute outage that served responses with HTTP 500 errors to about 28% of HTTP traffic served by Cloudflare. Since Cloudflare handles an average of 81 million HTTP requests per second, this represents a substantial chunk of internet traffic, including LinkedIn, Zoom, and Downdetector.