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Build GraphRAG systems: extract entities and relationships, design graph schemas, detect communities, and combine vector and graph retrieval.
Build federated GraphQL APIs across microservices. Learn Apollo Federation architecture, @key and @external directives, entity resolution, router configuration, performance with DataLoader, query planning, cost limits, and observability.
Build production gRPC services in Node.js. Learn Protocol Buffer schema design, server setup with @grpc/grpc-js, unary and streaming communication, interceptors for auth/logging, grpc-gateway for REST compatibility, health checking, and reflection for debugging.
gRPC streaming types: server→client for real-time data, client→server for uploads, bidirectional for chat. Binary, low-latency, flow-controlled, and better than REST.
The incident was bad. Someone deployed bad code. Someone missed the alert. Someone made a wrong call at 2 AM. A blame postmortem finds the guilty person. A blameless postmortem finds the system conditions that made the failure possible — and actually prevents the next one.