MarketStore, an open-source financial time series database, has generated significant interest and comments following its release. The database was designed to store years of data at second-level granularity for tens of thousands of series, with a primary use case in AI machine learning and backtesting for Alpaca's algo trading platform. MarketStore stores data on disk but can load it at speeds competitive to in-memory storage due to SSD evolution. It has been compared to PostgreSQL and InfluxDB, with advantages over Timescale in terms of performance and cost-effectiveness for financial market data use cases. A new feature allowing streaming and real-time push is being developed, and the database can be used for both historical and real-time data. MarketStore's open-source nature aims to make high-performance time series data management accessible to individual investors and improve the algo trading environment.