ARAshutosh Rathinashublog.hashnode.dev·Jun 2 · 12 min readBehavioral Regression Testing for AI Agents: Introducing agentcheckSoftware testing has solved hard problems over the past few decades. Property-based testing, mutation testing, snapshot testing, fuzz testing. But none of that infrastructure was built with AI agents 00
ARAshutosh Rathinashublog.hashnode.dev·May 26 · 7 min readLaunching LLM Gateway: Building a Control Plane for LLM ReliabilityRepo: ashutosh-rath02/llm-gateway Why Build Another Layer Around LLMs? Most teams do not begin with a gateway. They begin with a single feature, a provider SDK, one prompt, and a direct API call insi00
ARAshutosh Rathinashublog.hashnode.dev·Jan 17 · 6 min readUnderstanding what’s behind “Where is my train”When Google acquired “Where’s My Train” in 2018, I got curious about how they built a system that tracks 14,000 trains daily across India’s railway network — especially in areas with terrible connectivity. After diving deep into the architecture and ...00
ARAshutosh Rathinashublog.hashnode.dev·May 3, 2025 · 16 min readHow to Build Your Own Search Engine: A Step-by-Step GuideUnderstanding what’s running under the hood. Six months ago, I was frustrated with the search functionality in the document management system we use at work. It couldn't handle typos, didn't understand synonyms, and completely missed finding related...00
ARAshutosh Rathinashublog.hashnode.dev·Mar 22, 2025 · 6 min readBaking with OO Goodness : Understanding factory methodsIntroduction “Baking with OO Goodness” - This chapter from Head First Design Patterns came in handy when I was building a data pipeline at my org. Have you ever found yourself with a growing mess of if-else statements to create different object types...00
