You-might-like: liked-entity fallback when the section is thin (#790) #95

Merged
bvandeusen merged 2 commits from dev into main 2026-06-11 23:33:26 -04:00

2 Commits

Author SHA1 Message Date
bvandeusen 26c368c35e fix(recommendation): use type conversion for fallback rows (staticcheck S1016)
test-go / test (push) Successful in 28s
test-go / integration (push) Successful in 4m35s
golangci-lint v2 (CI-only; local is v1) flagged the field-by-field struct
literals — the fallback and you-might-like row types are identical, so convert
directly instead.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-06-11 23:26:35 -04:00
bvandeusen 36786defd1 feat(recommendation): fall back to liked entities when You-might-like is thin (#790)
test-go / test (push) Failing after 14s
test-go / integration (push) Has been cancelled
The taste roll-up surfaces top-similar albums/artists, which for a heavy
listener are mostly ones they already play — so the read-time dedup (vs Most
Played + Rediscover + Last Played) can strip the section down to a single tile
(reported on the artists row). The code was sound; the section was just starved.

Adds a read-time fallback: when a You-might-like row comes up short after dedup,
top it up from the user's LIKED artists/albums — a far larger pool than the
12-entity similarity roll-up, so the same exclusions still leave plenty. Reuses
the existing Rediscover-fallback queries (no new SQL), applies the same
exclusions (already-shown + Rediscover + Most/Last Played) so it never
duplicates a tile or suggests an actively-played entity, and is best-effort
(a query error leaves the section as-is). Takes effect immediately — no rebuild.

A cold-start user with no likes gets nothing from the fallback, so the
new-user-empty behaviour is preserved (test still passes).

Test: 20 liked artists, none played → Rediscover fills 10, You-might-like
fallback fills the other 10, disjoint.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-06-11 23:24:21 -04:00