Engineering Process
System Architecture
Systems that are secure by design, concurrent by default, and scalable by necessity.
Distributed Job Processing
1 / 8In BiTraq (crypto arbitrage platform), synchronous processing of price alerts, wallet syncing, and notification delivery would block the trading API—causing users to miss time-sensitive arbitrage windows. I decoupled these into persistent background queues, ensuring the main API responds in <50ms even under 10x traffic spikes.
Key Capabilities
Problem Solved
- Business Need: Traders need instant alert delivery for fleeting arbitrage opportunities
- Technical Challenge: Synchronous processing caused 3-5s API timeouts during peak hours
- Trade-off: Eventual consistency for non-critical paths vs. immediate consistency for trades
Architecture Decision
- Durable job queues with at-least-once delivery guarantees
- Worker pool auto-scaling based on queue depth
- Dead letter queues for failed jobs with exponential backoff
- Impact: 99.9% alert delivery rate, API latency reduced from 3s to <50ms
Implementation Details
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