Ilya Dyoshin questions

Ilya Dyoshin answers

• Spring Websocket Security throwing AccessDeniedException
• Spring Cache refreshing obsolete values
• efficiently store a result stream in multiple tables with optimistic locking per item
• UnexpectedRollBackException in Spring inner transaction
• How to write an upsert trigger in PostgreSQL?
• logstach: jdbc_page_size doesn't dump all my data to elastic search
• Spring Data Rest - PATCH Postgres jsonb field
• Set optional parameters in JPQL Query
• postgres 9.6 index only scan on functional index logically possible but not executed
• Apache POI much quicker using HSSF than XSSF - what next?