connection-pooling

问题 I'm using Apache Commons Pool library to maintaing a pool of couchbase connections (can be seen as any kind of connection, doesn't really matter). The problem I'm facing is that the only way I've found to return objects to the pool is to do it programmatically by calling the returnObject method from the GenericObjectPool class. This forces the application to guarantee the return of the object once is borrowed from the pool, regardless any exception or unexpected behavior in the application.

问题 I'm using Apache Commons Pool library to maintaing a pool of couchbase connections (can be seen as any kind of connection, doesn't really matter). The problem I'm facing is that the only way I've found to return objects to the pool is to do it programmatically by calling the returnObject method from the GenericObjectPool class. This forces the application to guarantee the return of the object once is borrowed from the pool, regardless any exception or unexpected behavior in the application.

问题 during beta testing we discovered connection pooling error messages . Therefore I have been going through the code and closing down the SqlDataReader objects wherever they have been left unclosed. What I need to know is how to close a datareader (or if there is a need at all to close) that is specified in the SelectStatement attribute of the SqlDataSource or ObjectDataSource tags. Could there be connection leak if they are not handled? Thanks in advance ! 回答1: I tend to use the "using"

问题 during beta testing we discovered connection pooling error messages . Therefore I have been going through the code and closing down the SqlDataReader objects wherever they have been left unclosed. What I need to know is how to close a datareader (or if there is a need at all to close) that is specified in the SelectStatement attribute of the SqlDataSource or ObjectDataSource tags. Could there be connection leak if they are not handled? Thanks in advance ! 回答1: I tend to use the "using"

问题 during beta testing we discovered connection pooling error messages . Therefore I have been going through the code and closing down the SqlDataReader objects wherever they have been left unclosed. What I need to know is how to close a datareader (or if there is a need at all to close) that is specified in the SelectStatement attribute of the SqlDataSource or ObjectDataSource tags. Could there be connection leak if they are not handled? Thanks in advance ! 回答1: I tend to use the "using"

问题 Having upgraded from DBCP connection pooling to Tomcat's own implementation (based on the excellent comparison here); I'm a little confused as to why they've dropped these 2 properties, while keeping everything else: poolPreparedStatements="true" maxOpenPreparedStatements="10000" Does this mean that prepared statement pooling is not supported in this implementation? And does each connection maintain its own pool of prepared statements by default? I've spent a considerable time researching

问题 We have a java server connecting to a MySQL 5 database usingHibernate as our persistence layer which is using c3p0 for DB connection pooling. I've tried following the c3p0 and hibernate documentation: Hibernate - HowTo Configure c3p0 connection pool C3P0 Hibernate properties C3P0.properties configuration We're getting an error on our production servers stating that: ... Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: No operations allowed after connection

问题 Most widely used options in database.yml are of following : adapter encoding database pool username password socket host port timeout I know the use of the most of the above but pool. So i want to know what is the use of the pool option in database.yml or there is any other parameter which we need to set for the application having very heavy traffic. 回答1: It sets the amount of possible connections per ruby process. So in case you are threading your rails app, or you use transactions

问题 Most widely used options in database.yml are of following : adapter encoding database pool username password socket host port timeout I know the use of the most of the above but pool. So i want to know what is the use of the pool option in database.yml or there is any other parameter which we need to set for the application having very heavy traffic. 回答1: It sets the amount of possible connections per ruby process. So in case you are threading your rails app, or you use transactions

问题 I am going through spring boot application and mongoDb connection POC. I have added following dependency: <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-data-mongodb</artifactId> </dependency> Also I have gone through mongoB properties with properties: https://docs.spring.io/spring-boot/docs/current/reference/html/common-application-properties.html Can you please how do we define connection pooling mechanism here? 回答1: You cannot do this out of the