update Typesafe config to 1.3.0-M3

[rkuhn]

from Havoc:

Here's what's new:
https://github.com/typesafehub/config/blob/master/NEWS.md#130-m1-march-6-2015

It probably makes sense to move current dev versions of akka and play
to this release and see if anything explodes. I would do a 1.3.0 final
before your projects go final, of course.

At this time all the open issues are feature requests or I couldn't
reproduce them. I don't know of anything that's broken. So if you find
anything let me know.

I think akka was implementing the Config interface, which has new
methods added, so it probably will not compile. Config is "sealed by
documentation" by the way since Java doesn't have sealed. :-)

However, the optimizations to path parsing in this release may mean
the caching you were doing isn't needed anymore. Details of those
optimizations are at lightbend/config#205
in case you feel like deleting code. I think even more optimization
could be possible but it's already fast so you will have to tell me if
it matters to you.

[He-Pin]

+1 for that.and maybe the cachedConfig is no longer needed

[He-Pin]

then it should be1.3.0-M2 :P

[rkuhn]

@patriknw This should be done soon as well.

[ktoso]

Requires minor changes in code on our side, I'll solve it

[patriknw]

Great, later we might want to try to remove the caching workaround. Havoc said that the new version might be fast enough. Please create a new ticket for that task.

[ktoso]

I checked if we need CachingConfig still, and yeah I think we do:

@Benchmark def deep_config  = deepConfig.hasPath(deepKey)
@Benchmark def deep_caching = deepCaching.hasPath(deepKey)

[info] Benchmark                                            Mode  Samples       Score  Score error   Units
[info] a.d.CachingConfigBenchmarkBenchmark.deep_caching    thrpt       40  146234.778     3638.332  ops/ms
[info] a.d.CachingConfigBenchmarkBenchmark.deep_config     thrpt       40    3165.616      140.646  ops/ms

[ktoso]

Should I create the ticket anyway, to revisit at some point in the future?

[patriknw]

awesome, if you have already checked we don't need a ticket