Programming Tutorials

  Few things are more frustrating for a backend engineer than waking up to a PagerDuty alert screaming about failed pipelines. If you are integrating DeepSeek’s LLM API into your production workflows, you have likely encountered the dreaded   503 Service Unavailable   or   502 Bad Gateway   errors. As DeepSeek surges in popularity due to its cost-to-performance ratio, their infrastructure frequently faces massive concurrency spikes. This results in "Server Busy" responses that can cripple synchronous applications. Simply wrapping your API calls in a generic  try/catch  block is not a production-grade solution. To build resilient AI-driven applications, you must implement mathematical retry strategies and multi-provider failovers. Root Cause Analysis: The Anatomy of a 503 Before patching the code, we must understand the infrastructure dynamics. A  503 Service Unavailable  status code does not usually mean the DeepSeek inference engine has cras...