Engineering Logs for Troubleshooting & Debugging
OpenAI GPT‑4o API Rate Limit Exceeded During Kubernetes Rolling Update Problem Description (Symptoms and Impact) During a rolling update of the text‑generation microservice on GKE, a burst of 429 Too Many Requests responses was observed. The symptoms included: Log entries such as: [WARN] request_id=abc123 – OpenAI API returned 429 – Rate limit exceeded – retry_after=30s Failed … Read more
Problem Three Kubernetes clusters (us‑east‑1, eu‑central‑1, ap‑southeast‑2) run identical CronJob manifests that trigger a batch inference worker every 5 minutes. The workers pull pending requests from a shared DynamoDB table and invoke the OpenAI GPT‑4o endpoint. After a recent deployment, the OpenAI API started returning 429 Too Many Requests errors, and the logs showed duplicate processing … Read more
Inconsistent Prompt Templates Across API Gateway Nodes (OpenAI GPT‑4o) Problem During an A/B test that splits traffic between control and variant groups, the chat completion service began returning divergent outputs for the same user cohort. The symptoms observed were: Control requests sometimes received the temperature=0.7 value that belongs to the variant, and vice‑versa. System prompts … Read more
Problem – Growing GPT‑4o Inference Queue in Staging During a recent load‑test of the staging environment we observed that inference requests to the dedicated gpt-4o endpoint began to accumulate in the service queue. The backlog manifested as: HTTP 503 Service Unavailable responses with body {“error”:{“type”:”queue_full”,”message”:”queue_full”}} Intermittent 429 Too Many Requests errors indicating rate‑limit exhaustion Client‑side … Read more
Problem Description The production service that wraps the OpenAI GPT‑4o model is failing to become ready during deployment. The symptom set observed across multiple environments includes: Container logs ending with Error: model loading timed out after 10000ms. HTTP 504 Gateway Timeout responses from the load balancer. Kubernetes readiness probe failures: Health check failed: GPT‑4o not ready … Read more
Problem Description During high‑throughput real‑time streaming with OpenAI GPT‑4o, the inference pipeline intermittently drops the connection. The client receives HTTP 401 responses such as: Error: Invalid API Key HTTP/1.1 401 Unauthorized Content-Type: application/json { “error”: { “message”: “Invalid request: token expired”, “type”: “invalid_request_error”, “code”: “invalid_api_key” } } Log excerpts from the Python SDK show the same … Read more