AEArda Ereninardaeren.hashnode.dev·Jun 12 · 10 min readHow to set up MCP analytics and error trackingOriginally published on Posthog blog: https://posthog.com/tutorials/mcp-analytics MCP servers give LLMs powerful capabilities, but without analytics and error tracking you're flying blind with no visi00
AEArda Ereninardaeren.hashnode.dev·Nov 14, 2025 · 21 min readWhy Some Products Feel Different:Two products do the same thing, but one feels effortless and the other feels like work. The difference isn't features or aesthetics: it's how they interact with human psychology, cognition, and behavi00
AEArda Ereninardaeren.hashnode.dev·Nov 1, 2025 · 13 min readClean Database Transactions with TypeScript DecoratorsPart 2 of the Database Reliability Series You get a ticket. A customer is upset—they updated their profile, got a success message, but never received the confirmation email. Support checks the logs: profile updated successfully, notification record c...00
AEArda Ereninardaeren.hashnode.dev·Sep 30, 2025 · 6 min readWhy JavaScript is Still Slower Despite C++ Foundation (And 3 Ways to Fix It)This question hits me every time I explain that Node.js is essentially C/C++ with JavaScript bindings. It's like asking why a luxury sedan is slower than a Formula 1 car when they both have engines. The answer reveals something profound about how we ...00
AEArda Ereninardaeren.hashnode.dev·Sep 29, 2025 · 6 min readChoreographing Distributed Sagas with State MachinesEver wondered how your backend knows what a user can and can't do? Welcome to the world of Finite State Machines—where business logic meets bulletproof guarantees, and where every state change becomes a conversation with your entire system. Think of ...00
