rooter connection

1. The relationship between the HTTP protocol and the TCP/IP protocolLong connections and short connections to HTTP are essentially TCP long connections and short connections. HTTP belongs to the Application layer protocol, which uses the TCP protocol at the Transport Layer and IP protocol at the network layer. The IP protocol mainly solves the network routing and addressing problems, the TCP protocol mainly solves how to reliably pass the packet over the IP layer, so that all the packets sent b

Database Connection Pool Druid usage instructions, database connection druid Replace it with the optimal database connection pool based on factors such as comprehensive performance, reliability, stability, scalability, and ease of use. Druid: druid-1.0.29 Database Mysql.5.6.17 Replacement target: replace C3P0 with druid Reason for replacement: 1. Performance hika

From: http://blog.csdn.net/wenyuan_w/archive/2007/09/02/1769432.aspxWith the release of. net. The database reading technology also evolved from ADO to ADO. net. As you know, ADO. NET provides more convenient database read/write capabilities and excellent performance than ADO.Connection Pool is an important function of ADO. Net to improve performance. However, there are few documents concerning the connection pool mechanism. Therefore, troubleshooting

1.Linux Link Concept There are two kinds of Linux links, one is called hard link (Hard link), the other is called Symbolic link (symbolic link). The ln command produces a hard link by default. The specific use is: Ln–s source file Destination file. "Hard Connection" A hard connection refers to a connection through an index node. In a Linux file system, a file

1. Use database connection pooling to optimize program performance L Application direct access to links disadvantage Each request requires a link to the database, and a database creation connection typically consumes relatively large resources and is created for a long time. If the site 100,000 visits a day, the database server needs to create 100,000 connections, a huge waste of database resources, and ver

PHP uses Redis persistent connection methods, phpredis connection details This article describes how PHP uses Redis persistent connection. We will share this with you for your reference. The details are as follows: Php-redis Project address on github: https://github.com/phpredis/phpredis Pconnect function declaration Time_out indicates the number of seconds after

HTTP is a non-connected transaction protocol, the underlying use of TCP, connection pooling is a TCP connection, the purpose is to make multiple HTTP requests on a TCP connection to improve performance. At the end of each HTTP request, HttpClient will determine if the connection can be persisted, and if it can be manag

socket interpretation, HTTP and socket long connection and short connection difference. TCP/IP TCP/IP is a protocol group that can be divided into three levels: Network layer, Transport layer and application layer. At the network layer are IP protocols, ICMP protocols, ARP protocols, RARP protocols, and BOOTP protocols. There are TCP protocols and UDP protocols in the transport layer. ； In the applicat

HTTP is a non-connected transaction protocol, the underlying use of TCP, connection pooling is a TCP connection, the purpose is to make multiple HTTP requests on a TCP connection to improve performance. At the end of each HTTP request, HttpClient will determine if the connection can be persisted, and if it can be manag

int I;Enum color {red, green, blue };Const double Pi = 3.1415;Union rep {...};Void test (INT p ){};Foo;Bar B; 3. compilation unit When a C or CPP file is being compiled, the Preprocessor first recursively contains the header file to form a single source file containing all necessary information. This source file is a compilation unit. This compilation unit will be compiled into a target file (. O or. OBJ) with the same name as the CPP file name ). The Conne