dynamodb 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

1. Preface Apache Mina is an excellent project organized by Apache. Mina is the abbreviation of multipurpose infrastructure for networkapplications. It is a network application framework that helps users easily develop high-performance and high-reliability network applications. This article describes how to use Apache mina2.0 to implement TCP persistent connections and short connection applications.2. system introduction 2.1 System Framework The entir

Why is TCP using three handshake to establish a connection, if two handshakes can be used, please explain the reason?　　No. A three-time handshake is used to prevent the failure of the connection request message segment from being transmitted to the server abruptly, resulting in an error. When the client sends a connection request message segment for some reason d

1. Linux link conceptLinux links are classified into two types: Hard Link and Symbolic Link ). By default, the ln command generates a hard link. [Hard connection]Hard connection refers to the connection through the index node. In a Linux File System, a file stored in a disk partition is assigned with an Index node number (Inode Index) No matter what type it is ).

Compared with socket developers, the TCP creation and link Division processes are automatically created by the TCP/IP protocol stack. therefore, developers do not need to control this process. however, it is helpful to understand the underlying TCP operation mechanism.In addition, a written examination such as a network protocol engineer is almost mandatory. the enthusiasm of the company for this issue is beyond my expectation :-). This problem is sometimes emphasized before the interview in the

Java database connection pool configuration methods (take MySQL database as an example), database connection mysqlSeveral configuration methods for Java Database Connection Pool (taking MySQL database as an example) 1. Tomcat configuration data source: Prerequisites: You need to put the jar package for connecting to the MySQL database driver into the lib director

configuration information in Oracle Net Manager management, and then link the string to the following notation: Data SOURCE=TORCL; User Id=myusername; Password=mypassword; Other ways of connecting, refer to the following, from other websites: Oracle Connection string Summary Oracle XE Standard connection Oracle XE (or Oracle Database 10g Express Edition) is a simple, free release version. The

The following small series will give you an analysis of the non-interactive connection of mysql interactive connections. I think it is quite good. I will share it with you and give you a reference. Let's take a look at the interactive operations: in other words, you open the mysql client on your local machine, that is, the black window, and perform various SQL operations in the black window, of course, it must be the tcp protocol. Non-interactive ope

This is a creation in Article, where the information may have evolved or changed. The Golang itself does not provide a driver to connect to MySQL, but it defines a standard interface for third-party development drivers. Here to connect MySQL can use third-party libraries, third-party libraries recommend the use of Https://github.com/Go-SQL-Driver/MySQL this driver, update maintenance is better. The following shows the specific use, the complete code example can refer to the last. Download driv

Java. io. IOException: the software in your host suspends a established connection ., Abort connection exception 1. Error description [19:13:48-ddmlib] the software in your host suspends a established connection. Java. io. IOException: the software in your host suspends a established connection. At sun. nio. ch. socke

clearly, today I will give you say these two values.First, the concept1) Interactive_time: means that if the spare NS (n is the value of this attribute), then the MySQL connection will be closed automatically. What kind of MySQL connection is turned off? Before, we were in the what is MySQL interactive and noninteractive operation? In this article, MySQL is a two-way operation, there are two kinds of

Original address: http://blog.sina.com.cn/s/blog_6d39b5be0101k6v4.html　　　　A long connection and short connection: Long connection: The client and the server to establish a connection, the connection after the establishment of continuous open, and then send and receive messag

Java database connection and java database connection code Note:1. All Database-related (jdbc) packages are java. SQL .*;2. Copy the jar packages required by the project to the web-inf/lib folder. I. sqlsever Database Package dbcon; Import java. SQL. Connection; Import java. SQL. DriverManager; Public class DBConn { Public Co