Haxl - 一个简化远程数据访问的 Haskell 库

Haxl is a Haskell library that simplifies access to remote data, such as databases or web-based services. Haxl can automatically

• batch multiple requests to the same data source,
• request data from multiple data sources concurrently,
• cache previous requests.

Having all this handled for you behind the scenes means that your data-fetching code can be much cleaner and clearer than it would otherwise be if it had to worry about optimizing data-fetching. We'll give some examples of how this works in the pages linked below.

There are two Haskell packages here:

• haxl : The core Haxl framework
• haxl-facebook (inexample/facebook): An (incomplete) example data source for accessing the Facebook Graph API

To use Haxl in your own application, you will likely need to build one or more data sources : the thin layer between Haxl and the data that you want to fetch, be it a database, a web API, a cloud service, or whatever. The haxl-facebook package shows how we might build a Haxl data source based on the existing fb package for talking to the Facebook Graph API.