CCXT and Vectorbt: Fetching Binance Futures
What if your crypto backtest could run on data from 1,000 trading pairs in under 40 seconds? Most traders waste hours manually fetching and cleaning OHL...
What if your crypto backtest could run on data from 1,000 trading pairs in under 40 seconds? Most traders waste hours manually fetching and cleaning OHLCV data before they even see a single signal. The combination of ccxt vectorbt creates a powerful engine for quantitative analysis that rivals institutional tools. Instead of waiting days to scan the market, you can iterate on strategy logic while your coffee brews. The first step in any robust system is reliable data ingestion, yet many developers stumble on API limits. When you use the CCXT library with Binance, the default behavior returns only the last 500 candles for a specific timeframe. This is insufficient for meaningful historical analysis or backtesting strategies that require months of data. You can increase this limit to 1,000 rows using the limit argument, but fetching years of data requires a loop that respects rate limits. According to the CCXT documentation, you must handle pagination manually to retrieve extended history. The process involves fetching the first batch, extracting the timestamp of the last candle, and requesting the next batch starting from that point.