Library term·FinTech & data science
REST vs WebSocket for Financial Infrastructure
Request/response vs persistent streams — choose based on freshness, fan-out, and state sync.
Authored by·Editorially reviewed
Onur Erkan YıldızFounder, Financial Engineer · CMB-licensed
Higher education in Financial Engineering and Money & Capital Markets. SPK (Turkey CMB) licence. 16 years across institutional markets, research, and quant-driven analytics.
Overview
REST suits reference data and idempotent commands; WebSockets for sub-ms style tick streams (venue dependent).Practical takeaway
Hybrid stacks use snapshot + delta to recover missed events.How this connects to Finvestopia
Finvestopia’s live quotes follow WebSocket-style fan-out even if your transport differs.Related entries
Educational content authored by our team — informational only, not investment advice.