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Java – mysterious finally

August 27, 2019 abei Leave a comment

1. Will finally{} block always be executed? Statement block finally{} not be always executed, only by the condition of the…

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Posted in: java

JVM – a troubleshooting of sustained increase in Memory Usage of Old Gen

August 11, 2019 abei 7 Comments

1. Background In online environment, we have a web application to supply workbench service, and normal business time is from…

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Posted in: jvm

JVM – a bug of ShardingJDBC causes 100% CPU usage

August 4, 2019 abei Leave a comment

1. Background 1.1. Interface to SQL interface : the interface used to query user info in batch, and the URL…

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Posted in: jvm

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