Tom Howard created TEXT-99:
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Summary: Performance Degradation for Escaping JSON
Key: TEXT-99
URL: https://issues.apache.org/jira/browse/TEXT-99
Project: Commons Text
Issue Type: Bug
Affects Versions: 1.1
Environment: OS X 10.11.6
java version "1.8.0_60"
Java(TM) SE Runtime Environment (build 1.8.0_60-b27)
Java HotSpot(TM) 64-Bit Server VM (build 25.60-b23, mixed mode)
JProfiler 9.1 (Build 9128)
Reporter: Tom Howard
Priority: Minor
There seams to be a small performance degradation on
StringEscapeUtils.escapeJson(String) in commons-text v1.1 compared to
commons-lang3 v3.5
I have a performance test that involves (amongst other things) escaping 200,052
strings. Using commons-text v1.1 this consistently takes 100ms to 110ms. Using
commons-lang3 v3.5 this consistently takes 92ms to 95ms.
Also, after escaping I'm writing it to using java.io.Writer.write(String). I
would have assumed that StringEscapeUtils.ESCAPE_JSON.translate(CharSequence,
writer) would yield better performance, however in the same test, using this
method constantly takes approx 210ms and the parent method (which serialises
the entire payload to JSON) takes approx 1750ms compared to approx 1400ms using
StringEscapeUtils.escapeJson(String) from commons-lang3 v3.5
I've marked the issue as minor, as it doesn't really impact me, but I thought I
should share my findings.
The serialiser can be found at
https://github.com/mountain-pass/ryvr/blob/master/src/main/java/au/com/mountainpass/ryvr/io/RyvrSerialiser.java
and the performance test can be executed using `./gradlew
testRyvrTests_Integration_Performance_Java_H2Local`
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