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Here’s an interesting library created in Swift that provides background image downloading with built-in caching called Skeets from Dalton Cherry.

Skeets features a nice simple syntax requiring only one method call to download images with callbacks for progress, completion, and errors.

The feature list according to there readme includes:

  • Multi level cache. In-memory and disk caching.
  • Nonblocking IO. All HTTP and disk IO happen in the background, thanks to GCD.
  • Simple one method to load a remote image.
  • Robust, fast, and customizable caching.
  • Simple concise codebase at just a few hundred LOC.
  • handles redundant image requests, so only one request is sent for multiple queries

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Here’s an open source iOS library from Pierre-Oliver Latour that provides a lightweight embeddable http web server called GCDWebServer.

GCDWebServer is built with an event-driven design using grand central dispatch, and provides a number of very nice extra features such as JSON parsing and serialization, http compression with gzip and more. There are also extensions providing an interface for uploading/downloading files, and a WEBDAVServer.

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