Tz_world / timezone_boundary_builder update

News Announcing
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Fixed a few bugs, updated the documentation to reflect @lostkobrakai’s suggestion and added an even faster backend TzWorld.Backend.EtsWithIndexCache which is about 40% faster than TzWorld.Backend.Memory although it does take about 512Mb. Results:

Name                                 ips        average  deviation         median         99th %
Backend EtsWithIndexCache          73.37       13.63 ms    ±20.09%       13.81 ms       19.01 ms
Backend Memory                     51.67       19.35 ms    ±14.90%       18.50 ms       29.64 ms
Backend DetsWithIndexCache         49.23       20.31 ms    ±13.60%       21.18 ms       25.44 ms
Backend Ets                         2.25      444.57 ms     ±2.05%      445.87 ms      456.08 ms
Backend Dets                        0.54     1853.16 ms    ±23.09%     1684.00 ms     2726.35 ms

Comparison: 
Backend EtsWithIndexCache          73.37
Backend Memory                     51.67 - 1.42x slower +5.72 ms
Backend DetsWithIndexCache         49.23 - 1.49x slower +6.68 ms
Backend Ets                         2.25 - 32.62x slower +430.94 ms
Backend Dets                        0.54 - 135.97x slower +1839.53 ms

Other improvements:

  • Dialyzer is now also happy.
  • Removed a compile-time expression that would break releases
  • Consolidated the documentation in the TzWorld module

Unless any nasty bugs pop up I’ll release to hex in about 24 hours.

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