m2m connections

HTTP the relationship between protocol and 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 ma

Recently, the User database name has already more than 'max _ user_connections 'active connections error is reported on the website. It is necessary to study this problem. Max_user_connections is the maximum number of MySQL user connections. The full-range statement indicates that the maximum number of connections of MySQL on the server is insufficient. Solution

1. modify the number of files that can be opened by a user process On the Linux platform, whether it is a client program or a server program, during high-concurrency TCP connection processing, the maximum number of concurrent connections is limited by the number of files that the system can open for a single process (this is because the system creates a socket handle for each TCP connection, each socket handle is also a file handle ). You can use the

1. modify the number of files that can be opened by a user processOn the Linux platform, whether it is a client program or a server program, during high-concurrency TCP connection processing, the maximum number of concurrent connections is limited by the number of files that the system can open for a single process (this is because the system creates a socket handle for each TCP connection, each socket handle is also a file handle ). You can use the u

TCP/IPTCP/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. at the application level: TCP includes FTP, HTTP, TELNET, SMTP, and other protocolsUDP includes DNS, TFTP, and other protocolsShort Connectionconnection, transfer data, close connectionHTTP is stateles

Processing of RDS MySQL connections with a full number of cases2 cases of RDS MySQL connections1. Too many idle connectionsReason: Applications use long connection mode-for long connection modes (such as Java apps), the application side should configure the connection pool. The number of initial connections to the connection pool is set too high, and after the app starts, multiple idle

Maximum number of iis connections and queue length, number of iis and queue length Recently, performance problems have occurred on the servers of the company's project. When the customer asks the question about the maximum number of connections, the question about the excessive iis load is very cute. Then, he checked the relevant information: First, let's take a look at the two numbers in IIS: Maximum numbe

Max_user_connections is the maximum number of MySQL user connections. The full-range statement indicates that the maximum number of connections of MySQL on the server is insufficient. Solution: Modify the value of the max_user_connections parameter in my. ini or my. cnf file in the MySQL installation directory and restart the MySQL server. But normally, the default 100

Max_user_connections is the maximum number of MySQL user connections. The full-range statement indicates that the maximum number of connections of MySQL on the server is insufficient. Solution: Modify the value of the max_user_connections parameter in my. ini or my. cnf file in the MySQL installation directory and restart the MySQL server.But normally, the default 100 c