LELi emilyinemily19980210.hashnode.dev·4d ago · 5 min readBuilding a Caching Layer for Historical K-Lines from a Gold Real-Time APIWhen I first built my gold market analysis system, I treated the gold real-time API as a simple data source: whenever my code needed historical K-lines, it made a request. That worked until I started 10
LELi emilyinemily19980210.hashnode.dev·Aug 5 · 4 min readBuilding a Reliable XAUUSD Tick Pipeline with a Precious Metals API: Our Battle with Daylight Saving TimeWhat happens when your gold trading strategy suddenly breaks in summer It was one of those late-night debugging sessions that every cross-border fintech startup knows too well. Our team had just rolle10
LELi emilyinemily19980210.hashnode.dev·Jul 29 · 5 min readBuilding a Cross-Market Time Alignment Layer for Precious Metals K-Line GenerationWhen I first tried to generate reliable 1-minute K-lines for XAUUSD, I kept running into mysterious gaps and jumps. The root cause turned out to be the misalignment of timestamps as liquidity rotated 10
LELi emilyinemily19980210.hashnode.dev·Jul 22 · 4 min readBuilding Resilient Real-Time Market Data Pipelines: Handling Stock Halt and Resumption SnapshotsHigh-frequency trading systems live and die by data integrity. While much attention is paid to latency and throughput, a quieter threat lurks in state transitions: stock suspensions and their subseque00
LELi emilyinemily19980210.hashnode.dev·Jul 14 · 3 min readBuild a Multi-Timeframe Signal Validation Engine for Your Robo-Advisor Using WebSocket Tick DataIntroduction If you’re the developer behind a smart advisory app, you’ve likely encountered the moment where your daily trend model and your minute-level scalper start shouting contradictory orders at10
