Is there a plan for android about the ‘feature/lazy_attachments’? On Friday, August 7, 2015 at 4:42:50 AM UTC+8, Jens Alfke wrote: > > I’m working on support for deferring attachment downloads — you’ll be > able to tell a pull replication not to download attachment contents, and > then you can request that individual attachments be downloaded. This > feature has been requested many times. > > My work so far is checked into the couchbxse-lite-ios repo as a branch > named ‘feature/lazy_attachments’. You’re welcome to try it out or critique > it. There are some preliminary docs here > <https://github.com/couchbase/couchbase-lite-ios/wiki/Deferred-Attachment-Downloading> > on > the wiki. There’s also a C# pull request by a 3rd party > <https://github.com/couchbase/couchbase-lite-net/pull/471> that uses a > somewhat different API. > > This is preliminary and the API and features are subject to change. I’m > particularly interested in which of the limitations/issues people consider > to be deal-breakers or highest priority. Quoting from the wiki page: > > • There's not currently any way to pull some attachments automatically but > not others. It's all or nothing. > • Multiple calls to download the same attachment will issue redundant > downloads, wasting network bandwidth. (Only one copy will be saved to disk, > though.) > • Attachment downloading isn't as fault-tolerant as regular replication: > if there's no network connectivity or the server isn't reachable, the > request will immediately fail. If the request fails, it won't be > retried automatically. > • If you retry an interrupted download, it starts over from the beginning > instead of where it left off. > • There's no way yet to cancel or pause a download. > • There's no way to "un-download" an attachment, i.e. purge an attachment > from local storage. > > > —Jens >
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