Operations | Monitoring | ITSM | DevOps | Cloud

Best Practices for Testing Zone Redundancy

The way the story goes is that in the old days Amazon used to cut power to data centers so they could see if their services were actually redundant across different data centers; and that they only abandoned this practice when EC2 customers started to complain (no matter how many times they were warned their instances might disappear without notice). This story may be apocryphal, but you don’t need to be worried about power loss outages in order to have a given data center go down.

Office Hours: How to test serverless applications using Failure Flags

Part of the Gremlin Office Hours series: A monthly deep dive with Gremlin experts. Serverless applications are ideal for deploying scalable applications without having to manage infrastructure. However, this also makes it difficult to test their reliability. It’s easy to simulate a network outage or latency when you have direct access to the host that your software’s running on. What do you do when you only have control over the code?

How Visa Cross Border Solutions Reduces Outages by Testing System Resilience in Their SDLC

For global financial services companies, reliability must be built-in and validated before and after shipping to production. Resilience testing is crucial for verifying the reliability of your applications under real-world conditions. But ad-hoc testing and exploratory experiments aren't sufficient: you need to run automated, standardized tests at global scale.

Interpreting your reliability test results

Gremlin’s default suite of reliability tests analyzes critical functions of modern services: scalability, redundancy, and resilience to dependency failures. Services that pass this suite of tests can be trusted to remain available during unexpected incidents. But what happens when a service fails a test? How do you take failed test results and turn them into actionable insights? This blog aims to answer that question.

Office Hours: Get better reliability on AWS with our new release

Part of the Gremlin Office Hours series: A monthly deep dive with Gremlin experts. Cloud platforms make it easier than ever to deploy massively scalable, distributed workloads, but this is a double-edged sword. There are reliability challenges unique to the cloud that didn’t exist before. Failed migrations, recurring incidents, and reliability toil take their toll.

Release Roundup August 2024

Over the past year, the Gremlin team has focused on giving you more tools to adapt Gremlin to your organization’s reliability needs. We started with customizable reliability tests, and now, we’ve released customizable role-based access controls (RBAC). We’ve also made it easier to target specific availability zones when running Failure Flags experiments, and to run experiments behind a proxy. Keep reading to learn more! ‍

How to verify, document, and prove compliance with Gremlin

Resilient and reliable IT systems have become a minimum requirement for modern businesses—a fact driven home by any number of high-profile outages over the past few years. Unfortunately, when those outages are in the financial sector, it can have far-reaching and incredibly damaging results.

Achieving SLO Success with Golden Signals and Reliability Testing

The four Golden Signals are an easy and effective way to measure the most important aspects of a system, and when paired with a reliability management platform like Gremlin, they help you proactively meet your SLOs so you can meet your legal obligations and deliver the perfect customer experience.

5 essential resilience tests for a successful cloud migration

Part of the Gremlin Office Hours series: A monthly deep dive with Gremlin experts. Migrating to the cloud usually means faster deployments and easier scalability, but it also means latency. Cloud applications communicate over distributed networks, and while these networks are fast, little bits of latency can quickly add up.