10 recommended courses on the control mechanism

In general development, I often see many students in the Java Concurrency Development model will only use a number of basic methods. Like volatile,synchronized. Like lock and Atomic, a lot of people don't use this kind of high-class contract. I think most of the reasons are due to the non-attribution of the principle. In the busy development work, who will be very accurate to grasp and use the correct concurrency model? So recently, based on this idea, I intend to organize this part of the concurrency control mechanism into an article. It's a memory of your own knowledge and hopefully the kind of class that this article will help to most developers. Parallel program development inevitably involves multi-threaded, multi-task collaboration and data sharing issues. In the JDK, there are many ways to achieve concurrency control between multiple threads. For example: internal locks, re-entry locks, read and write locks, and semaphores. Java memory model in Java, each thread has a working memory area that holds a copy of the value of the variable in main memory shared by all threads. When a thread executes, it operates these variables in its own working memory. In order to access a shared variable, a thread usually first

1. Detailed Java concurrency control mechanism

Introduction: In general development, I often see many students in the Java Concurrency Development model will only use a number of basic methods. Like volatile,synchronized. Like lock and Atomic, a lot of people don't use this kind of high-class contract. I think most of the reasons are due to the non-attribution of the principle. Who will accurately grasp and use the correct concurrency model in the busy development work?

2. Using the OOP features of PHP for data protection (1)

Summary: In PHP 4, declaring variables typically use Var, whereas in PHP 5, you can use object-oriented programming (OOP) features to customize the visibility of data-accessibility, which is very similar to variable scope, but provides a better control mechanism with the following three types of visibility modifiers:

3. PHP Object-oriented access type control

Summary: Public, protected, private these three modifiers are the access control mechanism introduced by PHP5, which allows developers to restrict access to members of a class by using modifiers. Literally, these three modifiers are translated into Chinese, which are public, protected (protected), private, and so on. The following example of a wildcard code looks at how public, protected, private are limited to members in a class. Public-owned

4. Use cakephp to develop PHP applications at high speed-user and permissions control

Introduction: Using cakephp to quickly develop PHP applications-user and rights control cakephp Framework provides a set of ACL-based access control mechanisms. You can quickly implement permission control by using the Authcomponent and aclcomponent components. Permission design based on access control table from the ER diagram above, it can be seen that the business object of the Aro object is role (roles, and group is the same concept). In the data base, there is no

5. Use cakephp to develop PHP applications at high speed-user and permissions control

Introduction: Using cakephp to quickly develop PHP applications-user and rights control cakephp Framework provides a set of ACL-based access control mechanisms. You can quickly implement permission control by using the Authcomponent and aclcomponent components. Permission design based on access control table from the ER diagram above, it can be seen that the business object of the Aro object is role (roles, and group is the same concept). In the number of databases, there is no industry for ACO

6. Summary of basic concepts of transactions and locks in SQL Server

Introduction:. 1 Basic concept concurrency control: mainly considering the fact that multiple users access the same data in the database at the same time. SQL Server design has two control mechanisms for concurrent access: Lock, row versioning. Lock: Mainly used in multi-user environment to ensure database integrity and consistency. Each transaction pair relies on a resource that requests a different type of lock, which can block its

7. Account Program System role multi-pronged security for Oracle

Summary: An account is a name defined in a database system, which is the basic access control mechanism of a database. When connecting to an Oracle database, as with other databases, users are required to

8. Oracle Database Authoring Effective Transaction guidelines

Summary: In the Oracle database, a control mechanism called ldquo; transaction rdquo is provided. Through things, can complete the effective security of the data modification operations, so that the database

9. mysql lock mechanism/management (concurrent lock, row lock, table lock, pre-lock, global lock, etc.)

Introduction: MySQL Lab 1.? Concurrency and isolation control mechanism in MySQL Meta-data metadata lock: Implemented in the table cache cache, provides isolation for DDL (Data Definition Language). A special meta-data meta-data type called name Lock. (SQL Layer) table-level Table-level data Lock (SQL Layer) storage engine-specific mechanism RO

Redis Source Learning-aof

Introduction: There are also many articles on the aof mechanism of Redis introduced on the network, but the process of aof is introduced from the macroscopic, and there is no specific analysis of the data structure and control mechanism involved in the AOF process. Last night special read 2.8 source code, feel the source of many details is worth careful scrutiny. Especially the list *aof_rewrite_buf_blocks structure. Look carefully at the source, will send

"Related question and answer recommendation":

How does the security control mechanism of MySQL database work?

Java-spring Security + Tomcat SSO