🔁 How to Pair TTL with Your Redis Hashtag Rotator for Real-Time Civic Dashboards

⏳ TTL + Hashtag Rotator Integration

Pair Redis TTL with your civic hashtag rotator for freshness, fallback, and audit-ready logic…

🔁 Option 1: TTL on the Entire Hashtag Queue

Use this when you want the whole queue to expire and refresh periodically.

await redis.set("hashtag:queue", JSON.stringify(hashtags), { ex: 3600 }); // expires in 1 hour

🔁 Option 2: TTL on Individual Hashtags

Use this when each hashtag should expire independently, even if the queue persists.

await redis.set(`hashtag:item:${tag}`, tag, { ex: 300 }); // each tag expires in 5 minutes await redis.lpush("hashtag:queue", `hashtag:item:${tag}`);

🔍 TTL Monitoring (Optional)

✅ Monitor TTL to avoid silent expiry and auto-refresh your queue before it vanishes.

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

🧩 Best Practice: Combine TTL + Fallback

• Use TTL to auto-expire stale data
• Use fallback logic to repopulate from static civic hashtags or Trends24
• Version queues by region: hashtag:queue:kiambu, hashtag:queue:eldoret

📚 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