<div dir="ltr">Our 'wholesale' core topology is like a pancake, with many clusters spread out into regions of the world, currently 3.<div><br></div><div>The pancake has 3 communication layers: 'input' for swapping inputs for replicated processing, 'output' for distributing processing results, and the 'postoffice' for general communication.</div>
<div><br></div><div>I experimented a lot with federation a year ago and had a few working iterations but found it difficult to create a reliable, maintainable configuration for our use case - federation tries to do so much for you. </div>
<div><br></div><div>So I turned to shovels for more simplicity and control at the expense of more difficult configuration.</div><div><br></div><div>Some of our core clusters support the 'retail' layer of instances that gateway to clients (candles?). We are introducing federation into one of these communication links because we want the propagation of client bindings from the gateway instance to the core - an excellent feature of federation and an important refinement for us.</div>
<div><br></div><div>Initially I had thought that the 'new' federation replaced the 'old' shovel, but this is not true - each tool has its place although their capabilities overlap.</div><div><br></div><div>
With easier configuration in 3.3, the lowly shovel may get its due!</div><div><br></div><div>ml</div><div><br></div><div><br></div></div><div class="gmail_extra"><br><br><div class="gmail_quote">On Fri, Feb 28, 2014 at 4:45 AM, Ben Hood <span dir="ltr"><<a href="mailto:0x6e6562@gmail.com" target="_blank">0x6e6562@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div class="">On Thu, Feb 27, 2014 at 5:13 PM, Laing, Michael<br>
<<a href="mailto:michael.laing@nytimes.com">michael.laing@nytimes.com</a>> wrote:<br>
> Ah yes - I must have carried that thought over when we switched from<br>
> federation to shovels :)<br>
<br>
</div>What was it about federation that brought you to switch from<br>
federation to shovels?<br>
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