configuration, and many examples of open source and Tomcat applications are used for this connection pool.This connection pool can set the maximum and minimum connections, connection waiting time, etc., basic functions are available. The configuration of this connection
In practice, we often encounter areas where pooling is needed, especially database connection pooling.Why do we need a pool? Because these resources are created, resources are consumed. Therefore, we use an object pool, which is pre-created with some resource objects. When we need to, we pull the object out of the pool
of several steps that take a long time. A physical channel (such as a socket or named pipe) must be established, and a handshake must be performed with the server for the first time. The connection string information must be analyzed and the server must authenticate the connection, check must be run to register in the current transaction, and so on.
In fact, most applicationsProgramUse only one or severa
1. For the ASP. NET database connection pool, you can use a group of name-value pairs to configure the connection pool as a link string. For example, you can configure whether the pool is valid (which is valid by default). The max
1. For the ASP. NET database connection pool, you can use a group of name-value pairs to configure the connection pool as a link string. For example, you can configure whether the pool is valid (which is valid by default). The max
1, for a asp.net database connection pool, you can configure a link pool as a link string using a set of name-value pairs. For example, you can configure whether the pool is valid (default is valid), the maximum and minimum capacity of the pool, and the time that the queued
rebuilt, ensure that the Connection object obtained from the Connection pool is available. Of course, to ensure absolute availability, you can also use testOnBorrow to be true (that is, to check the availability of the Connection object), but this will affect the performance.
To perform SQL
Original article: http://www.codeproject.com/KB/dotnet/ADONET_ConnectionPooling.aspx
1: Merge database connections
Establishing a connection to the database server consumes a lot of system resources. If a system needs to query a database service, you must first establish a connection to the database and then perform the query.Can you feel that when you use the same query on the client to submit the qu
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Brief introduction
Usage evaluation
Project Home
DBCP
DBCP is a database connection pool that relies on the Jakarta Commons-pool object pooling mechanism. DBCP can be used directly in the application
You can set the maximum and minimum connections, the connectio
for multi-client database-based systems. So it's necessary to use a connection pool for either the Java EE or the J2SE as long as this condition is met.The code is not given, this place can not be affixed to the net down to When an application requests a connection, the connection
Label:
Brief introduction
Usage evaluation
Project Home
DBCP
DBCP is a database connection pool that relies on the Jakarta Commons-pool object pooling mechanism. DBCP can be used directly in the application
You can set the maximum and minimum connections, the connection
Some customers say they found that the current number of connections in the WEBLOGIC92 connection pool (active capacity) is less than the initial connection number (initial capacity) through connection pool monitoring. On the phen
It is time-consuming to open or close a database connection. Therefore, ADO. Net automatically stores database connections in the connection pool. The connection pool can greatly improve data reading performance, because you do no
efficiency will be higher. Index Division: for example, Department numbers. Each workshop only stores part information of its own workshop, and divides the information of each workshop into separate tables for more convenient query. Longitudinal cutting:This is the so-called column cutting. When using big data, the number of columns directly affects the access effect.
Instance segmentation:It is to abstract the Common Business parts and store them in different databases. For example, account
length of time (in seconds) exceeds the value specified by Connection Lifetime, the connection will be destroyed. This is useful in clustering configuration (used to force load balancing between running servers and servers that are just online ). If the value is zero, the connection pool has the maximum
concept:
The database connection pool is responsible for allocating, managing, and freeing the database connection, which allows the application to reuse an existing database connection instead of re-establishing a database connection that is idle for more than th
1. Why use the connection pool?
-It takes time and resources to create a connection.-Connection pools can be used to maintain connections after a specific page is run.2. Comparison between using a connection pool and not using a
Pool size=512; Min Pool size=5 ". When the number of simultaneous connections to a database is 513, the error will occur after waiting for the sqlconnection.connectiontimeout to set the time (15 seconds by default) or if there is no available connection. - Connection Pool
Net of various pools in. NET, there are four commonly used pools: string detention pool, thread pool, application pool, database connection pool. String Detention PoolStrings in.
Keywords: ASP. NET, Oracle, database connection pool, performance bottleneck
Abstract: This article introduces the performance bottleneck caused by connection pool problems in connecting Oracle to Asp.net and the solution through a case I have experienced.1. Problem Discover
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