Timeseries Data Pipeline

Hello, how do you guys handle timeseries data that depend on other data tables? Right now Im using timescale db as a store. BUT when inserting events an other table must be fatched where prices are resampled on application side to match and enrich the events before they are inserted. That is done in chunks. Works fine. But there is a delay of about one minute. Is there some design pattern or data technology to handle such use case? Thanks for any hint!