# Writing Efficient Data Requests

TODO([#26](https://github.com/googlestaging/weather-tools/issues/26)). In the mean-time, please consult this ECMWF
documentation:
* [Web API Retrieval Efficiency](https://confluence.ecmwf.int/display/WEBAPI/Retrieval+efficiency)
* [Era 5 daily data retrieval efficiency](https://confluence.ecmwf.int/display/WEBAPI/ERA5+daily+retrieval+efficiency)