Optimize aggregate read operation#892
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dmdashenkov merged 16 commits intomasterfrom Dec 11, 2018
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@armiol, PTAL. |
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@@ Coverage Diff @@
## master #892 +/- ##
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+ Coverage 93.39% 93.4% +<.01%
- Complexity 3868 3870 +2
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Files 529 529
Lines 12627 12637 +10
Branches 704 704
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+ Hits 11793 11803 +10
+ Misses 606 605 -1
- Partials 228 229 +1 |
# Conflicts: # config # server/src/main/java/io/spine/server/aggregate/AggregateRepository.java
dmdashenkov
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@dmdashenkov let's discuss the naming. Other than that, LGTM — once, hopefully, the build passes.
| * | ||
| * @see AggregateStorage#readEventCountAfterLastSnapshot(Object) | ||
| */ | ||
| private int persistedEventCount = 0; |
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To me, the name of the variable does not correspond to its description and usage.
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Dec 7, 2018
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In this PR we make the
AggregateRepositoryread the required amount of history events, even if this number is greater than the snapshot trigger.Previously, the number of read events was always equal to the snapshot trigger.
Also, now we cache the
eventCountAfterLastSnapshotin theAggregateinstance. This helps us not to re-fetch the value when appending the aggregate history.