implemented a lot of features

config/gc.ts

@@ -0,0 +1,57 @@
+import env from '#start/env'
+
+/**
+ * Retention for transient pipeline state in Redis. See CONCEPT.md (D11).
+ */
+export default {
+  /** How often `gc:scheduler` sweeps. */
+  intervalMs: env.get('GC_INTERVAL_MS', 10 * 60 * 1000),
+
+  jobs: {
+    /** Completed jobs are only kept for inspection; keep them briefly. */
+    completedAgeSeconds: env.get('GC_COMPLETED_AGE_SECONDS', 60 * 60),
+    completedMaxCount: 1000,
+    /** Failed jobs are kept longer so they can be inspected and retried. */
+    failedAgeSeconds: env.get('GC_FAILED_AGE_SECONDS', 7 * 24 * 60 * 60),
+  },
+
+  /**
+   * Upper bound on waiting body jobs. Obfuscated traffic can exceed what the
+   * line downloads for hours; beyond this, the oldest waiting jobs are
+   * dropped so Redis stays bounded (~1 KB per job).
+   */
+  bodyQueueMax: env.get('GC_BODY_QUEUE_MAX', 500_000),
+
+  binaries: {
+    /**
+     * A binary that gets no new segments for this long is deleted: incomplete
+     * ones are given up on, completed ones have been copied into `files`.
+     */
+    staleAfterSeconds: env.get('GC_BINARY_STALE_SECONDS', 48 * 60 * 60),
+    /**
+     * Header-derived binaries that still have one article after this long:
+     * uploads that give every article its own random name (and poster) never
+     * complete from headers. A real file gets its next articles in minutes.
+     */
+    singleArticleAfterSeconds: env.get('GC_SINGLE_ARTICLE_SECONDS', 2 * 60 * 60),
+  },
+
+  /** Releases without files or binaries (their binaries were collected) are deleted after this long. */
+  emptyReleaseAfterSeconds: env.get('GC_EMPTY_RELEASE_SECONDS', 2 * 60 * 60),
+
+  /** Bulk deletes run in batches of this size, for at most this long per sweep. */
+  deleteBatch: 20_000,
+  deleteBudgetMs: env.get('GC_DELETE_BUDGET_MS', 3 * 60 * 1000),
+
+  /**
+   * Deferred files (CONCEPT.md D28) are deleted this long after they were
+   * first seen, processed or not. The articles stay on the server.
+   */
+  deferredRetentionDays: env.get('GC_DEFERRED_RETENTION_DAYS', 30),
+
+  /** Redis hashes from the old header worker (before D12); they only need to expire. */
+  legacyPendingFiles: {
+    prefix: 'file:',
+    ttlSeconds: 48 * 60 * 60,
+  },
+}