whoami
Deep technical notes on operating systems, virtualization, cloud infrastructure, kernels, filesystems, emulation, and the history behind essential tools.
Design SQS FIFO ordering groups, bounded deduplication, visibility timeouts, and DLQ recovery while keeping business effects replay-safe.
Design async Ansible jobs with bounded runtimes, per-host job IDs, reliable polling, result checks, cleanup, and ansible-core 2.19-safe conditionals.
Deploy Java Lambda versions with SnapStart while refreshing cloned state, rebuilding connections, handling hook limits, and verifying safe rollouts.
Protect Azure Pipelines releases with resource-owned approvals, branch checks, artifact evaluation, timeouts, and exclusive locks.
Build durable per-object schedules around one alarm, persisted work records, replay-safe effects, and bounded recovery rather than timer assumptions.
Carry D1 bookmarks across Worker requests for sequentially consistent replica reads; distinguish sessions from transactions, authorization, and shared caching.
Design GitHub Actions deployment gates deliberately: configure environment rules outside YAML, restrict refs, delay secrets, and verify plan availability.
Scope GitLab CI_JOB_TOKEN access across projects with inbound allowlists, trigger-user permissions, fine-grained API rules, and reproducible denial tests.
Renew kubeadm-managed control-plane certificates safely by checking expiry, separating CA and kubelet lifecycles, restarting consumers, and validating endpoints.
Resume OCI blob uploads with exact registry HTTP semantics, safe recovery, digest and size checks, optional mounts, and capability limits your CI must test.
Posts revised with new sources, corrected facts, or fixed links - not just new posts.