Ke'ao Yang | The Blog Pros

January 29, 2021

How to Simulate I/O Faults at Runtime

In a production environment, filesystem faults might occur due to various incidents such as disk failures and administrator errors. As a Chaos Engineering platform, Chaos Mesh has supported simulating I/O faults in a filesystem ever since its early versions. By simply adding an IOChaos CustomResourceDefinition (CRD), we can watch how the filesystem fails and returns errors.

However, before Chaos Mesh 1.0, this experiment was not easy and may have consumed a lot of resources. We needed to inject sidecar containers to the Pod through the mutating admission webhooks and rewrite the ENTRYPOINT command. Even if no fault was injected, the injected sidecar container caused a substantial amount of overhead.

April 23, 2020

Quickly Find Rust Program Bottlenecks Online Using a Go Tool

Profiling large Rust applications online is difficult. Current profilers are not up to the job.

When we need to analyze a Rust program's performance, we often think about perf. To use perf, we need to:

Packages for Store Routines in MariaDB 11.4
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MariaDB 11.4 introduced many advanced features. One that grabbed my attention is the general support of packages for stored routines. Although this was previously available by activating the Oracle compatibility mode, now the feature is available gener... […]
Maintain Chat History in Generative AI Apps With Valkey
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A while back I wrote up a blog post on how to use Redis as a chat history component with LangChain. Since LangChain already had Redis chat history available as a component, it was quite convenient to write a client application. But, that's not the same... […]
Knowledge Graph Enlightenment, AI, and RAG
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In the previous edition of the YotG newsletter, the wave of Generative AI hype was probably at its all-time high. Today, while Generative AI is still talked about and trialed, the hype is subsiding. Skepticism is settling in, and for good reason. Repor... […]
Building an Effective Zero Trust Security Strategy for End-To-End Cyber Risk Management
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You've probably heard a lot about zero-trust security lately, and for good reason. As we move more of our applications and data to the cloud, the traditional castle-and-moat approach to security just doesn't cut it anymore. This makes me come... […]
Phased Approach to Data Warehouse Modernization
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A modernized database will help you focus on building innovative solutions rather than investing your time and effort in managing these legacy systems. Based on the scale of your existing data warehouse processes or jobs, it can be an enormous task to ... […]