Not in any way Ruby, but I discovered that you can set the maximum number of 
connections in a HAProxy frontend to 0:

$ echo "set maxconn frontend ft_redis 0" | socat 
unix-connect:/Users/will/tmp/redis-haproxy/admin_a.sock stdio

effectively allowing you to pause and queue new connections at HAProxy, 
allowing you to jiggle servers, in this case Redis, around. I’m using this for 
our zero-downtime redis failover stuff between datacentres.

In actual interesting Ruby developments, this from Chris Seaton in IRC:

00:38 chrisseaton: Was at JavaOne this week - very interesting work from IBM to 
add a new GC and JIT to MRI
00:38 chrisseaton: More details will be at RubyKaigi
00:41 wlll: Well, that does sound intersting
00:42 wlll: Any overlap with your work?
00:42 wlll: Anything that makes MRI faster is a +, getting buy in to move to a 
java infrastructure is a massive hurdle.
00:45 chrisseaton: They currently get 1.2x on our benchmarks, which can't be 
described as anything but modest (we're 20x on the same benchmarks), but they 
run Rails and you can't argue with taht
00:45 chrisseaton: Also they are just MRI - no JVM needed

Chris also mentioned another project that’s interesting around the JVM work 
he’s doing that I’m not sure is public knowledge yet that I guess he will talk 
about at some point.

Will.

> On 30 Oct 2015, at 09:55, Ian Moss <[email protected]> wrote:
> 
> Hey,
> 
> I thought it'd be great to know what my fellow Manchester rubyists have
> found interesting this week...

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