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What eBPF actually is, Cilium for network observability, Parca for continuous profiling, BCC tools, eBPF vs traditional APM, and production safety considerations.

Deploy code to edge locations near users for sub-100ms latency. Learn constraints, state management, and when edge adds complexity.

Master Elasticsearch index mapping, analyzer customization, multi-match queries with field boosting, pagination strategies, and shard management.

Scale embeddings search with HNSW vs IVFFlat, batch generation, incremental updates, hybrid search, pre/post-filtering, caching, and dimension reduction.

Set up Sentry for error tracking with source map upload, release tracking, performance monitoring, and alert routing that won't create alert fatigue.