connection-pooling

问题 In order to secure our database we create a schema for each new customer. We then create a user for this schema and when a customer logs in via the web we use their user and hence prevent them gaining access to other areas of the database. Our issue is with connection pooling as it is a bit inefficient to keep creating/dropping new connections for these users. We would like to have a solution that can work across many hundreds of different database users. We've looked at pg_bouncer, but the

问题 I am trying to make a Soap request using Spring WS. The request needs to send across client certificate to the server. I have figured out the configuration that makes the correct request to the server. Code presented below @Bean public HttpsUrlConnectionMessageSender messageSender() throws Exception { HttpsUrlConnectionMessageSender httpsUrlConnectionMessageSender = new HttpsUrlConnectionMessageSender(); httpsUrlConnectionMessageSender.setTrustManagers(<TrustManager>);

问题 I am trying to make a Soap request using Spring WS. The request needs to send across client certificate to the server. I have figured out the configuration that makes the correct request to the server. Code presented below @Bean public HttpsUrlConnectionMessageSender messageSender() throws Exception { HttpsUrlConnectionMessageSender httpsUrlConnectionMessageSender = new HttpsUrlConnectionMessageSender(); httpsUrlConnectionMessageSender.setTrustManagers(<TrustManager>);

问题 I have an app where JDBC connections are pooled. This is related to my question. For simplicity let's assume I have 1 connection and I need to set a variable then reset session / context state. However the idea is not reverse / reset the 'app1_ctx' variable particularly as in the actual case users can enter many procedures that set many variables so what I need is one procedure that clears all session related variables or even restart session. (please check this question too to understand the

问题 In my application I have multithreads that needs to access database and I am using apache.tomcat.jdbc.pool.DataSource as a JDBC connection pool. In some cases users execute stored procedures that might affect the database session context/variables before executing another query to retrieve some data. After a thread is finished, connection is closed but the way the pooled connections work, the connection is not actually closed but rather returned to the connection pool for reuse. The problem

问题 In my application I have multithreads that needs to access database and I am using apache.tomcat.jdbc.pool.DataSource as a JDBC connection pool. In some cases users execute stored procedures that might affect the database session context/variables before executing another query to retrieve some data. After a thread is finished, connection is closed but the way the pooled connections work, the connection is not actually closed but rather returned to the connection pool for reuse. The problem

问题 I have a Saas application on AWS ECS and databases on AWS RDS. We are planning to implement AWS RDS Proxy for pooling implementation. From the RDS proxy documentation, I saw that we don't need to make any changes to the application code. Currently, we are using application side connection pooling. When we implement an RDS proxy for pooling, does the current pooling have any impact? Do we need to remove the application side pooling to work with RDS effectively? My main concern is, if I choose

问题 I have created a master-slave postgreSQL (I have one cluster as main and the other one as hot_standby). All local host. I used the "pgpool.conf.sample" and changed the backend 1+2 for my master and slave nodes. whenever I open the pgpool and run show pool_nodes; I can see the master + slave but slave is on waiting status. If I return to the configuration file and turn on the master_slave_mode, now both nodes are "up" but they're standby and all goes through the master one. What i'm trying to

问题 I have created a master-slave postgreSQL (I have one cluster as main and the other one as hot_standby). All local host. I used the "pgpool.conf.sample" and changed the backend 1+2 for my master and slave nodes. whenever I open the pgpool and run show pool_nodes; I can see the master + slave but slave is on waiting status. If I return to the configuration file and turn on the master_slave_mode, now both nodes are "up" but they're standby and all goes through the master one. What i'm trying to

问题 I'm posting the question here just to be sure I'm not barking on the wrong tree. How to get the number of connections used (and free ) to the MongoDB, but from a client perspective (eg. Java client), using the 4.x driver? There are posts regarding using the serverStatus(Get the number of open connections in mongoDB using java), but it presumes having 'admin' access to the MongoDB. Using a 'regular user'(an db user with lower privileges (e.g access to only one database)) cannot run the