rsyslog levels

)Isolation is when multiple users concurrently access the database, such as when the same table operation, the database for each user-opened transactions, can not be disturbed by the operation of other transactions, multiple concurrent transactions to be isolated from each other. To achieve this effect: for any two concurrent transactions T1 and T2, in the case of transaction T1, the T2 either ends before the T1 starts, or starts after the T1 ends, so that every transaction does not feel that an

speak.Isolation (Isolation): In general, changes made by an office are not visible to other transactions until they are finally submitted. Notice here that the "usual", behind the transaction isolation level will be said.Durability (persistent): Once a transaction commits, its modifications are persisted to the database. When the system crashes, the modified data is not lost. (There is also a relationship between persistent security and the refresh log level, which corresponds to different

Based on dropdown. js, two levels of navigation menus with beautiful atmosphere are available: dropdown. js This article describes two levels of navigation menus Based on dropdown. js. Share it with you for your reference. The details are as follows: 1. Blue navigation menu The running effect is as follows: The Online Demo address is as follows: Http://demo.jb51.net/js/2015/js-dropdown-blue-style-nav-menu-

MySQL supports four transaction isolation levels and mysql supports four types of transactions. Test environment of this experiment: Windows 10 + MySQL5.6.36 + InnoDB I. Basic Elements of transactions (ACID) 　　1. Atomicity: All operations after the transaction starts, either completed or not done, cannot be stuck in the intermediate stage. If an error occurs during the transaction execution, it is rolled back to the state before the start of the tran

The " amp;" operator can be understood at three different levels. Operators can be understood at three different levels. Level 1 Understanding When the operands are boolean values, "" performs the Boolean AND (AND) operations on the two values. The Code is as follows: X = 0 y = 0 // returns true only when x and y are both 0. The priority of Relational operators is higher than that.Level 2 Understanding

transaction is part of the parent transaction and is submitted uniformly by the parent transaction. Now you can feel the "nesting", is that a little bit of meaning? These are the 7 levels of communication for a transaction, and in everyday applications, it can usually meet a variety of business needs, but in addition to the level of propagation, in the process of reading a database, if two transactions are executed concurrently, how is the data betwe

Article Title: describes four intrusion levels for Linux servers. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source. With the expansion of Linux enterprise applications, a large number of network servers use the Linux operating system. The security and performance of Linux servers have received increasing attention. H

Basically can be divided into three levels, the following Java Web development as an example, briefly explain:(1) Getting started. Master Java syntax, HTML syntax, JS syntax, CSS syntax, SQL additions and deletions, SSH or SSM framework use. In old words, "know it."(2) proficiency. Compared to the introductory phase, this phase makes perfect use of the skills that are constantly being used, allowing you to get the job done quickly.(3) proficiency. To

1. Locate the host you want to monitor: Search in the upper right cornerWe want to change the thresholds and levels of the sepm02p:Level of change: Click Triggers First,Select the monitoring items you want to change, such as I want to change the CPU, click the red mark below, do not choose Template OS Windows, because this is the change templateThe following is the change alarm levelIf you just change the monitoring threshold for this one, you need to

TTL level signals are used most often because the data is usually expressed in binary terms, which is equivalent to the logic "1", 0V is equivalent to the logic "0", which is called TTL (transistor-transistor logic level) signaling system"TTL level" is most commonly used in the relevant electrical majors, such as: circuit, digital circuit, microcomputer principle and interface technology, microcontroller and other courses are involved. There are only two lev