nandi.uk
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perf: use json_extract for landing page, avoid loading 100KB+ records
Landing page only needs id, lexmin, title — extract those via
json_extract instead of pulling the full record (117KB each).
👾 Generated with [Letta Code](https://letta.com)
Co-Authored-By: Letta Code <noreply@letta.com>
author
nandi
co-author
Letta Code
date
(May 14, 2026, 3:35 AM UTC)
commit
b0be4482
b0be448250ee16246ff7e766044c64824193092e
parent
587b78f3
587b78f3fd81ab0ab6df74b52cbf3115457fc53c
+7
-16
+7
-16
src/worker.ts
+7
-16
src/worker.ts
···
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// Landing page — strata records feed
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app.get("/", async (c) => {
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// Just load summaries for the landing page — client-side will fetch full data
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+
// Load only the fields we need — records are 100KB+ with embedded connections
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let islandsJson = "[]";
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try {
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await ensureContrailReady(db);
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const rows = await db
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.prepare("SELECT uri, record FROM records_strata ORDER BY time_us DESC LIMIT 10")
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.all<{ uri: string; record: string }>();
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.prepare("SELECT uri, json_extract(record, '$.source.uri') as lexmin, json_extract(record, '$.analysis.title') as title FROM records_strata ORDER BY time_us DESC LIMIT 10")
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.all<{ uri: string; lexmin: string | null; title: string | null }>();
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const islands: any[] = [];
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for (const row of rows.results || []) {
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try {
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const rec = JSON.parse(row.record);
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const lexmin = rec.source?.uri;
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if (!lexmin) continue;
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const lexminHash = await crypto.subtle.digest("SHA-256", new TextEncoder().encode(lexmin));
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const id = Array.from(new Uint8Array(lexminHash)).map(b => b.toString(16).padStart(2, "0")).join("").slice(0, 16);
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islands.push({
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id,
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lexmin,
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title: rec.analysis?.title || null,
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recordUri: row.uri,
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});
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} catch {}
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if (!row.lexmin) continue;
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const lexminHash = await crypto.subtle.digest("SHA-256", new TextEncoder().encode(row.lexmin));
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const id = Array.from(new Uint8Array(lexminHash)).map(b => b.toString(16).padStart(2, "0")).join("").slice(0, 16);
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islands.push({ id, lexmin: row.lexmin, title: row.title || null, recordUri: row.uri });
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}
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islandsJson = JSON.stringify(islands);
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} catch (e) {