🛠️ GitHub-Ready TTL Logic for Hashtag Rotators—Where to Place Each Line of Code

⏳ TTL + Hashtag Rotator Engineering Guide

Embed TTL logic into your Redis-powered hashtag rotator for freshness, fallback, and audit-grade rotation…

🧱 Architectural Context

Your rotator service includes:

• Scraper or fetcher (e.g. Trends24)
• Redis-backed queue manager
• Rotation engine (pop + push)
• Dashboard/API endpoint
• Optional: TTL monitor, fallback logic, audit logger

🔁 TTL on Entire Hashtag Queue

Use this in your ingestion or refresh script to expire the whole queue after 1 hour.

await redis.set("hashtag:queue", JSON.stringify(hashtags), { ex: 3600 });

🔁 TTL on Individual Hashtags

Use this in your ingestion loop to expire each tag independently.

await redis.set(`hashtag:item:${tag}`, tag, { ex: 300 }); await redis.lpush("hashtag:queue", `hashtag:item:${tag}`);

🔍 TTL Monitoring Logic

✅ Place this in a cron job or health check to refresh before expiry.

const ttl = await redis.ttl("hashtag:queue"); if (ttl < 300) { console.warn("Hashtag queue about to expire—refreshing..."); // fetch new hashtags and reset TTL }

🧩 Fallback Logic

Use this in your rotation engine or API endpoint to ensure continuity.

if (!queue || queue.length === 0) { queue = fallbackHashtags; await redis.set("hashtag:queue", JSON.stringify(queue), { ex: 3600 }); }

📡 Region Toggle Logic

Use this in your endpoint or dashboard renderer to serve region-specific queues.

const region = req.query.region || "kiambu"; const key = `hashtag:queue:${region}`; const queue = await redis.get(key);

📚 Glossary (Kid-Friendly)

Term	Meaning
TTL	Time-to-live: how long something stays before it disappears
Redis	A fast memory tool that stores and retrieves data quickly
Hashtag Queue	A list of civic hashtags that rotate one by one
Fallback	Backup plan if something fails
Monitor	A tool that watches and checks something regularly

Author: Peter M. Mutiti | Investigative Journalist & Civic Technologist

MIT License © 2025 Peter M. Mutiti · View License