You know that feeling when your AI agent starts burning through your API budget at 3 AM and you only find out the next morning? Yeah, we've all been there. The observability space for LLM applications has exploded in recent years, but most platforms either lock you into their ecosystem or charge you per-token like it's liquid gold. Let's talk about building a real-time monitoring strategy that doe
At 3:17 AM on a Tuesday in Q3 2024, our production Kotlin 2.0 microservice fleet hit a 92% memory utilization threshold across 140 nodes, traced to a silent coroutine leak in Ktor 2.2’s request pipeline that had been bleeding 12MB of heap per second for 72 hours. We lost $14k in SLO credits before we found the root cause. A Couple Million Lines of Haskell: Production Engineering at Mercury (78 p