<blockquote>
<p>I think it's worth discussing it here too, particularly if we want to ensure clear messaging to the user when they go over any quota.</p>
</blockquote>
<p>For a clear messaging we'd need something better than <em>You have downloaded too much data. Please try again later.</em> with comes with an  <em>HTTP 509 Bandwidth Limit Exceeded</em> error response.</p>
<p>Also, both downloads and uploads currently share the same user-based key in memcache. A user downloading lots of data might be impacted when trying to upload some changes (and vice versa). I don't know if this is good idea. On the other hand, if memcache memory permits, we might as well introduce a dedicated key only used for changeset upload tracking.</p>

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