printer pooling

Before the blog, there are said performance tests common terms: connection pooling. It is probably a brief summary of the role of the connection pool, this blog, the introduction of the connection pool and the connection pool thread object principle, role and advantages ...One, Connection pool1. What is a connection pool? Why do we need it?Connection pooling allows multiple clients to use cached connection

First, connection pooling overview In actual development, "get Connections" and "Release resources" is a very consuming system resources process, in order to solve this kind of performance problem, the connection pooling technology is usually used to share connection. using pools to manage connection can reuse connection. Instead of creating the connection object yourself, you can get it through the pool

establish a database connection pool, provide a set of efficient connection allocation, use policy, the ultimate goal is to achieve the efficient and safe reuse of the connection. 2. Principles of database connection poolingConnection pooling The basic idea is that when the system is initialized, the database connection is stored as an object in memory, and when the user needs to access the database, instead of establishing a new connection, it pulls

This article mainly describes the convolution and pooling technologies used by linear decoder in the big picture. For details, refer to http://deeplearning.stanford.edu/wiki/index.php/ufldl_tutorial. 　　Linear decoders: The output layer in sparse autoencoder satisfies the following formula: From the formula, we can see that the output value of A3 is the output of the f function, while in the common sparse autoencoder, the F function is generally the

The server configuration option lightweight pooling controls whether the SQL server instance uses Windows threads or fiber threads. The default value of this option is 0. This means that the SQL server instance plans a Windows Thread for each worker thread, and the number of worker threads cannot exceed the value set in the max worker threads option. If lightweight pooling is set to 1, SQL server uses fiber

ADO Summary Connection pooling allows an application to obtain a connection from the connection pool and use the connection without having to re-establish a connection for each connection request. Once a new connection is created and placed in a connection pool, the application can reuse the connection without having to implement the entire database connection creation process. When an application requests a connection, the connection pool ass

Label:For shared resources, there is a well-known design pattern: resource pools (resource pool). This model is to solve the problem caused by the frequent allocation and release of resources. The basic idea of a database connection pool is to establish a "buffer pool" for database connections. Pre-placed a certain number of connections in the buffer pool, when the need to establish a database connection, only need to remove one from the buffer pool, and then put it back. We can prevent the syst

allocated without consideration, such as too many connections, which can lead to memory leaks and server crashes. How database connection pooling (connection pool) works1. Basic concepts and principlesAs can be seen from the above analysis, the root of the problem lies in the inefficient management of database connection resources. We knowFor shared resources, there is a well-knownDesignPatterns: Resource pools (Resource pool). This model is to solve

Label:For shared resources, there is a well-known design pattern: resource pools (resource pool). This model is to solve the problem caused by the frequent allocation and release of resources. The basic idea of a database connection pool is to establish a "buffer pool" for database connections. Pre-placed a certain number of connections in the buffer pool, when the need to establish a database connection, only need to remove one from the buffer pool, and then put it back. We can prevent the syst

In Caffe, the structure of the network is given by the Prototxt file, composed of some columns of layer (layer), commonly used layers such as: Data loading layer, convolution operation layer, pooling layer, nonlinear transformation layer, inner product operation layer, normalized layer, loss calculation layer, etc. this article mainly introduces pooling layer1. General statement of the

Reprinted from 51CTO http://developer.51cto.com/art/201006/207768.htm51CTO once introduced a simple Java connection pool for us. To understand Java connection pooling let's first understand the principle of database connection pooling (connection pool), where Java connection pooling is the application of database connection p