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Advanced full-path scenarios connecting React UI, Next.js App Router boundaries, and Node.js APIs across authentication, caching, streaming, uploads, and failure handling.
Compose networking, migrations, connection pools, secrets, volumes, and everyday incidents when a Node service talks to Postgres in containers.
Advanced hardening of containerized Node.js services: least privilege, secure images, supply-chain controls, runtime isolation, network threats, and vulnerability response.
Cluster, worker_threads, HTTP server tuning, diagnostics, and error patterns. Includes single-select and multi-select items.
Event loop, modules, buffers, streams basics, and npm tooling. Mix of single-answer and multiple-answer items.
V8 JIT edges, snapshotting, security hardening, embedded patterns, and libuv internals at a practical level. Demanding items.
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