Function getCachedClassification

services/auto-routing/src/decision-cache.ts:92–110

(
  env: DecisionCacheEnv,
  conversationKey: string,
  contentHash: string,
  classifierModel: string
)

  model: z.string().min(1),
  // Taxonomy route the model was decided on, for route-change telemetry.
  // Nullable/defaulted so entries written before the field existed parse.
  routeKey: z.string().min(1).nullish().default(null),
  // Exact catalog variant the model was decided with. Null for legacy
  // model-only sticky records and for candidates without a variant.
  variant: z.string().min(1).nullish().default(null),
});
export type StickyDecision = z.infer<typeof StickyDecisionSchema>;

export async function getCachedClassification(
  env: DecisionCacheEnv,
  conversationKey: string,
  contentHash: string,
  classifierModel: string
): Promise<ClassifierOutput | null> {
  try {
    const value = await cacheStub(env, conversationKey).getEntry(
      entryKey(contentHash, classifierModel)
    );
    if (!value) return null;
    // Entries may have been written by an older worker version; validate
    // before serving.
    const parsed = ClassifierOutputSchema.safeParse(value);