EchoWallet

The brief

An operations team was flying blind: their existing dashboard refreshed every five minutes, and by the time anomalies surfaced, the damage was done. They needed sub-second visibility into a stream of ~40k events per minute — without melting the database that also served their customer traffic.

The build

• Event ingestion through a Redis Streams buffer, decoupling write bursts from processing.
• A Laravel worker fleet aggregates events into rolling windows (1s / 1m / 1h) stored in Redis, with MySQL used only for cold history.
• WebSocket fan-out pushes deltas — not snapshots — so each connected client receives ~2 KB/s instead of re-fetching entire datasets.
• A Vue front-end renders charts on requestAnimationFrame with batched DOM writes, staying smooth at 60fps even with 30 live widgets.

// Rolling window aggregation: one atomic Redis op per event
Redis::pipeline(function ($pipe) use ($event) {
    $bucket = now()->format('YmdHis');
    $pipe->hincrby("win:1s:{$bucket}", $event->type, 1);
    $pipe->expire("win:1s:{$bucket}", 120);
});

Transmission log

• Latency from event to pixel: 5 minutes → 800ms median.
• Database load from dashboards dropped to near zero — the customer-facing app got faster as a side effect.
• The ops team caught a payment-provider outage 11 minutes before the provider's own status page did.