spring data connection pool optimization
Use jedis2 There may be a problem with the small partners of the connection pool of 9.1. After the program runs with high concurrency for a period of time, the error message of Could not get a resource from the pool will appear, and the idle connection idelPool in the redistemplate connection factory viewed after stopping the interface call is ...
Posted by Copyright on Sat, 29 Jan 2022 07:27:41 +0100
sparksql insert postgresql field format mismatch error handling
1. Error Key Information
Caused by: org.postgresql.util.PSQLException: ERROR: column "c1" is of type point but expression is of type character
at org.postgresql.core.v3.QueryExecutorImpl.receiveErrorResponse(QueryExecutorImpl.java:2553)
at org.postgresql.core.v3.QueryExecutorImpl.processResults(QueryExecutorImpl.java:2285)
at org.postgres ...
Posted by jek on Thu, 20 Jan 2022 04:23:07 +0100
Java Foundation & Method
Java Foundation & Method
1. Overview of methods
Concepts of the 1.1 Method
A method is a set of code that organizes code blocks with separate functions into a whole and has special functions.
Be careful:
A method must be created before it can be used, and the process becomes a method definitionThe method is not created to run directly. ...
Posted by celavi on Thu, 11 Nov 2021 02:06:04 +0100