Market data API request calculator: estimate calls before choosing a plan
Estimate market data API calls from symbols, polling intervals, shared workers and backfill. Includes worked examples and a tested Python calculator.
Tag · polling
polling
4 posts on polling from the SiftingIO market data blog, spanning real-time and historical coverage across stocks, forex, crypto, commodities, and on-chain venues.
Posts tagged polling
n8n price alert workflow: message Slack only when a symbol crosses a level
Build an n8n price alert for Slack with market-hours checks, input validation, and state that detects level crossings between sampled prices.
Market hours API: check whether a market is open before your code polls it
Use a market hours API to check open status, holiday calendars, and half days across 23 markets so your polling code stops serving stale prices.
REST vs WebSocket for Real-Time Market Data: When to Use Each
REST or WebSocket for live market data? A plain guide to how each works, when to pull on demand versus stream, why fast polling scales badly, and how to use both together.