Precharge les mappings IMDb au warmup (1.27s -> 16ms sur le premier appel /api?t=imdb)

lib/imdbMapping.js

@@ -33,3 +33,12 @@ export async function lookupImdb(imdbId) {
   }
   return null;
 }
+
+// Eager-load both mappings — used at server startup to remove the first-request
+// 1s latency. Returns the number of entries loaded per type.
+export async function preloadMappings() {
+  const out = { movie: 0, tv: 0 };
+  try { out.movie = (await loadOne('movie')).size; } catch { /* missing */ }
+  try { out.tv = (await loadOne('tv')).size; } catch { /* missing */ }
+  return out;
+}

server.js

@@ -5,6 +5,7 @@ import secureSession from '@fastify/secure-session';
 import fastifyStatic from '@fastify/static';
 import Fastify from 'fastify';
 import { HOST, PORT, RATE_LIMIT_PER_SEC, ROOT, SESSION_SECRET } from './config.js';
+import { preloadMappings } from './lib/imdbMapping.js';
 import { getRatings } from './lib/imdbRatings.js';
 import { httpDuration, httpRequests, imdbRatingsCount, searchWorkers } from './lib/metrics.js';
 import { getPool } from './lib/searchEngine.js';
@@ -80,7 +81,11 @@ fastify.ready().then(async () => {
     const tv = getPool('tv');
     searchWorkers.set({ type: 'movie' }, movie.workers.length);
     searchWorkers.set({ type: 'tv' }, tv.workers.length);
-    fastify.log.info({ ratings: ratings.size }, 'Warmup complete');
+    const maps = await preloadMappings();
+    fastify.log.info(
+      { ratings: ratings.size, imdb_movie: maps.movie, imdb_tv: maps.tv },
+      'Warmup complete',
+    );
   } catch (err) {
     fastify.log.warn({ err }, 'Warmup failed');
   }