Changelog
Site version 2026.10.1, concept keys version 1, built from gigai 12241e91.
| Date | Site | What | Change |
|---|---|---|---|
| 2026-10-12 | 2026.10.1 | site site v1 | import of the two shipped courses (MLOps / ML platform engineer, AI forward deployed engineer) from gigai 0.1.11.10: 69 lessons, 62 practice paths, 2 pathways, 230 concept keys; system design module listed as planned |
| 2026-10-12 | 2026.10.1 | module system-design v1 | Part C published: the 13 design exercises (sd-ex-*), written by hand (Claude Fable 5.1, M4a) from the module outline; the other 27 lessons stay planned |
| 2026-10-12 | 2026.10.1 | module system-design v1 | Part C second read (M4b, Claude Fable 5.1): the 13 design exercises checked against their cited sources; all 13 accepted, with mechanical fixes in 8 files (two arithmetic slips, one number aligned to its source, six source attributions corrected, two internal inconsistencies, three assumption markers) and reviewed_by set on all 13 |
| 2026-10-12 | 2026.10.1 | module system-design v1 | Part C writer follow-up on the second reader's items (M4c, Claude Fable 5.1): all 10 'for the writer' items of the M4b review closed in 9 design exercises, now version 2 (sd-ex-payments-ledger, sd-ex-notifications, sd-ex-chat, sd-ex-llm-gateway, sd-ex-news-feed, sd-ex-autocomplete, sd-ex-file-storage, sd-ex-url-shortener, sd-ex-rag-service): the ledger re-derived at 6 lines per payment, priority queues and dead-letter edges in the notifications diagram with the preference-outage default fixed, one presence status at 60 s, the embeddings share carried through the gateway's token arithmetic, the feed's follower-equals-followee sentence and cost per daily active user with the primer cited beside the video, object storage and the fallback suggester in the autocomplete diagram, the corrupted-block row reworded, cost per billion redirects and id-scheme migration for the shortener with 307 dropped, and when RAG is not the answer |