Canonical, dated answers for coding agents — every entry states when it was true and which versions it applies to, so your context never goes stale.
Turborepo 2.11 (2026-09-18, latest 2.11.7) adds experimental Cargo/uv/Go workspaces, `devEngines.packageManager` and `turbo prune --production`. 2.9 deprecated the daemon, `--parallel` and `turbo-ignore` and introduced Future Flags for 3.0.
nginx 1.30.x (from 2026-04-14, latest 1.30.5 on 2026-09-15) is the stable branch and 1.31.6 is mainline. Since 1.29.7 the proxy defaults to HTTP/1.1 with upstream keepalive. 2026 brought many worker-memory CVEs, so patch.
ClickHouse ships monthly (YY.M versioning): 26.x brought cascading refreshable materialized views, hypothetical skip indexes, experimental continuous queries and relentless async-insert/query optimizations.
The Component Model + WIT went 1.0 (2025), WASI Preview 2/3 stabilized async, and WASM 3.0 is in draft — plugins, edge runtimes and sandboxed agent tooling are the real-world uses.
OpenTelemetry is the settled standard: traces+metrics+logs via one SDK, semantic conventions for AI/LLM spans (genai), OTLP into any backend. Vendor agents (Datadog/Grafana/Honeycomb) all consume OTel natively.
Sandbox patterns that work: containers with egress allowlists (default-deny), macOS Seatbelt for local, WASM for snippets, permission-scoped tokens, and human gates on irreversible actions. Defense in depth, not a single wall.
The Terraform (HashiCorp BUSL) / OpenTofu (MPL) fork settled into parallel ecosystems: providers are cross-compatible, registries mirror, and the practical difference is license + a few language features (OpenTofu: foreach over modules, state encryption).
From May 2026 GitHub maintains arm64 runner images directly, Windows 2025/VS2026 images roll out, and ubuntu-22.04 begins staged retirement. Arm labels cut CI cost ~30-40%.
Dynamic secrets from a vault (short-lived DB creds), SOPS/git-crypt for config, env vars only at the edge, and scanning (gitleaks) in pre-commit + CI. Rotation measured in hours/days, not years. Agents never hold long-lived secrets.
Argo CD remains the GitOps default: app-of-apps for fleet management, ApplicationSets for templating, and Argo Rollouts for canary/blue-green wired to metrics.
Docker Engine 29 (2026) continues the cadence after 28: deprecated flags removed, containerd image store default, BuildKit assumed — the boring, modern baseline.
Whatever the worker (Celery/BullMQ/Sidekiq/Temporal-class): idempotent handlers keyed on task id, exponential backoff with jitter, dead-letter queues with replay tooling, and observability on queue depth/age — not just job success.
Expand-migrate-contract: additive change, backfill in batches, dual-read/write, then drop. Never a breaking DDL in one deploy. Lock-time budgets (lock_timeout) and tested rollback for every step.
Symptom-based SLO alerts (burn-rate) beat cause-based CPU/RAM graphs: page on user impact, ticket on everything else. Every alert names its runbook; unactionable alerts get fixed or deleted in review.
Timeline, impact (measured), contributing factors, action items with owners and dates. Blameless means systems-focus, but actions must still land — an action-item-less postmortem is a story, not a process.
NATS Server 2.12 (Sep 2025) — the 2.12.x line hardened through 2026 — added a new service infrastructure layer, memory improvements and domain-scoped features for multi-tenant deployments.
K8s 1.34 (Aug 2025) graduated DRA (GPU/accelerator allocation) to GA and stabilized sidecar containers; the 1.35 line (Dec 2025/2026) continues API granularization and kuberc-style user config separation.
Elasticsearch 9.0 (Apr 2025) focused on efficiency — lower memory, faster indexing and search — on modern JDKs, with continued ESQL momentum; 9.x matured through 2026.