// TOPIC
#observability
4 articles
◆◆◆AdvancedLangChainLangfuse
01Design an LLM Observability Platform
Design an LLM observability platform: distributed tracing for multi-step LLM apps capturing every prompt, token count, and cost to debug failed agent runs.
#interview#ai#llm
32 min◆◆◆AdvancedElasticSplunk
02Design a Centralized Log Aggregation System (ELK / Splunk)
Collect, store, and search logs from thousands of services. Collection agents, a buffered ingestion pipeline, time-based inverted indices, hot-warm-cold tiers, and cost control.
#interview#observability#search
29 min◆◆◆AdvancedDatadogGoogle
03Design a Metrics & Monitoring System (Prometheus / Datadog)
Ingest billions of time-series points, store them cheaply, and answer dashboard + alerting queries fast. TSDB internals, cardinality, downsampling, and pull vs push.
#interview#observability#time-series
26 min◆◆Intermediate
04Observability — Logs, Metrics, Tracing
The three pillars of observability, structured logging, metric cardinality, distributed tracing, and how to find the needle when production catches fire at 3am.
#observability#monitoring#operations
13 min