site_archiver@lists.apple.com Delivered-To: macnetworkprog@lists.apple.com On 22 May 2018, at 20:52, Sebastien Boisvert <sebastienboisvert@yahoo.com> wrote:

Do background sessions ignore the cache (with regards to populating it)?

Probably. While I’ve never explicitly investigated this, the background session architecture, where the actual networking is done inside a system process, isn’t compatible with custom caching. Note that the ‘will cache response’ delegate callback takes a data task, and data tasks have only limited support in background sessions. Specifically, you can run a data task in a background session but it will fail if your app gets suspended [1]. Honestly, it’s quite rare to use a data task in a background session. Which brings me to:

I have a need to make several requests for (small) resources …

Background sessions are optimised for a small number of large requests, making me suspect you’d be better off using a standard session. Why are you using a background session here? Share and Enjoy -- Quinn "The Eskimo!" <http://www.apple.com/developer/> Apple Developer Relations, Developer Technical Support, Core OS/Hardware [1] This is on iOS 8 and later. In the original iOS 7 implementation, data tasks were simply not supported in background sessions. _______________________________________________ Do not post admin requests to the list. They will be ignored. Macnetworkprog mailing list (Macnetworkprog@lists.apple.com) Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/macnetworkprog/site_archiver%40lists... This email sent to site_archiver@lists.apple.com