GET /xrpc/app.bsky.actor.searchActorsTypeahead
typeahead.waow.tech
add kill switch and global throttle for backfill
KV key "backfill" = "off" disables without redeploy. global rate
limit (10/min) caps total backfill writes regardless of user count.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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src/index.ts
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src/index.ts
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}
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}
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async function throttledBackfill(term: string, limit: number, env: Env): Promise<void> {
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// kill switch — set KV key "backfill" to "off" to disable without redeploying
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const flag = await env.KV.get("backfill");
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if (flag === "off") return;
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// global budget — cap total backfill triggers across all users
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const { success } = await env.RATE_LIMITER_STRICT.limit({ key: "backfill" });
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if (!success) {
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console.log(JSON.stringify({ event: "backfill_throttled", term }));
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return;
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}
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return backfillFromBsky(term, limit, env);
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}
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// --- end backfill ---
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async function handleSearch(
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// --- backfill: remove this block once at parity with Bluesky ---
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const hasGaps = actors.length < limit || actors.some((a) => !a.avatar);
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if (hasGaps) {
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ctx.waitUntil(backfillFromBsky(term, limit, env));
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ctx.waitUntil(throttledBackfill(term, limit, env));
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}
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// --- end backfill ---
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