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DongHyeonkaandClaude Opus 5 a2f749292a docs: add architecture diagrams for the three follow-up experiments
Each of A-7a, B-7a and D-4a had the concepts, procedure, commands and
terminal evidence but no diagram, which the rest of the series carries.

  a7a-cache-temperature.svg  the three cache states and the SQL each issues
  b7a-orphan-lifecycle.svg   ticket structure, accumulation across two
                             rotations, and why TTL is the only signal
  d4a-hook-timeline.svg      the 38m25s gap against the 1-2s one, on one axis

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-09-04 21:37:00 +09:00
DongHyeonkaandClaude Opus 5 b9f4ef7bc2 docs(a7a): the volatile refresh failure is a client-scope lookup, not REVOKED_TOKEN
A-7 left the cause as a hypothesis and said to confirm it with the statement
logging A-3 used. Doing that shows the hypothesis was wrong.

Login issues no SQL at all in volatile mode. Refresh issues exactly one
statement, and it is not the one A-7 guessed:

  select cscme1_0.SCOPE_ID from CLIENT_SCOPE_CLIENT cscme1_0
   where cscme1_0.CLIENT_ID=$1 and cscme1_0.DEFAULT_SCOPE=$2
   parameters: $1 = '131a9912-...', $2 = 'f'

REVOKED_TOKEN never appears. DEFAULT_SCOPE='f' means this is the optional
client scope list, which refresh needs because it recomputes which scopes go
into the new access token.

The larger finding is that A-7's table was conditional and did not say so.
The single statement is issued once and then cached, so the same
configuration produces three different outcomes depending only on cache
warmth — all three reproduced:

  fully cold      login 400  (select ce1_0.ID from CLIENT ...)
  CLIENT warm     login 200, refresh 500  <- what A-7 measured
  fully warm      login 200, refresh 200

So "volatile means you can log in without a database" is also conditional:
on a cold start the client lookup itself fails. In each case the Keycloak
log names the failing SQL directly, so this is determined rather than
inferred.

A-7 keeps its original wording with a correction banner above it, so what
was mis-guessed and why stays visible.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-09-04 20:27:23 +09:00