video1.0<iframe src="https://www.loom.com/embed/fba5a33ec2834c879dd079f442e10f77" frameborder="0" width="1116" height="837" webkitallowfullscreen mozallowfullscreen allowfullscreen></iframe>8371116Loomhttps://www.loom.com8371116https://cdn.loom.com/sessions/thumbnails/fba5a33ec2834c879dd079f442e10f77-89f1322deb8ffa34.gif216.8798In this video, I walk you through my approach to setting up backfilling in Amibroker, specifically using IQfeed. I keep my database disconnected during backtesting to avoid unnecessary updates, and I only perform backfills on weekends to maintain control and prevent database corruption. I use a minimal analysis file solely for backfilling, which allows me to efficiently update around 20,000 symbols for 10 years of one-minute bars in less than two hours. I recommend following this method to streamline your backtesting process. If you have any questions or need further clarification, feel free to reach out!