best series to read

card your phone supports. There are now three types of SIM cards in the market, sorted by size as follows: General SIM card >micro SIM card >nano SIM card. Strongly do not recommend the large card cut into small cards, a cut card size is difficult to accurately control, and then cut cards easily caused by SIM card chips and other damage, resulting in cell phone can not be recognized, loaded into the phone and may damage love machine, can be described as Penny Wise. So small

Detailed description of the implementation method of CodeIgniter read/write splitting, and codeigniter read/write. CodeIgniter: detailed description of the implementation method of read/write splitting. the example in this article describes the implementation method of codeigniter read/write splitting. For your referen

Let's take a big picture first: SQL statement used: BYS @ ocm1> select dbms_rowid.rowid_relative_fno (rowid) file #, dbms_rowid.rowid_block_number (rowid) block #, deptno from bys. test; FILE # BLOCK # DEPTNO ------------------------------ 4 391 10 For example, the text description analyzes the process of obtaining the required data block when the foreground process sends a query statement: Note:This article does not involve the parsing part of SQL statements, client-to-server interaction, and

[Reprinted] Java series notes (1), reprinted java series notesJava series notes (1)-Java class loading and initialization Address: http://www.cnblogs.com/zhguang/p/3154584.html Directory Class Loader Before learning about the Java mechanism, you must first understand how classes are loaded in the JVM (java Virtual Machine). This will play an important role in und

Social Security Series 2-file system and Social Security Series 2 Cards allow you to create your own file system in the available space. Supports multi-level directory structure. Files in the same-layer directory cannot have the same ID (identifier ). Data elements in a data file are stored in record or binary format. The file structure and reference mode are determined by the purpose of the file. In addi

CodeIgniter Read and write separation implementation method detailed, CodeIgniter read and write In this paper, the implementation method of CodeIgniter read-write separation is described. Share to everyone for your reference, as follows: The current server only do the master-slave, not configured read-write separatio

Learn MySQL in one step-Consistency non-locked read and locked read, mysql-ConsistencyConsistent nonlocking read) Consistent non-locked read is the InnoDB Storage engine that reads data from the database at the current execution time through multi versioning. If an exclusive lock is applied to the

Both of these methods exist as abstract methods in the abstract class InputStream ,The JDK API describes both of these: read (): NBSP reads the next byte of data from the input stream, returning 0 to 255 in the range of int byte value. If there are no bytes available since the end of the stream has been reached, -1 is returned. This method is blocked until the input data is available, the end of the stream is detected, or an exception is thrown.

C Quick Start series (7) and c Quick Start Series C Quick Start series (7) C pointer advanced This chapter introduces: In the previous section 5th, we made a preliminary understanding of the C language pointer. As the soul of the C language, The C pointer is certainly not that simple. In this section, we will further learn the pointer, such as the second-level

Single block read, block read What is single read? As the name implies, a single block can be read by a single block. The waiting event is db file sequential read. What are the situations of a single block read? Most index scans a

In Query performance optimization, Logical read is very important, and its count is generally proportional to the number of result sets queried, and is proportional to the speed of data read.1,set STATISTICS IO Explicit disk IO informationSyntaxSET STATISTICS on | OFF } Output Item meaning Table Name of the table. Scan Count Number of scans performe

Tags: example server server value occupancy information contradictory data page tailTable ' T_epz_inout_entry_detail '. Scan count 1, logic read 4,825 times, physical read 6 times, pre-read 19,672 times.SQL Server Database engine when a query statement is encountered, the SQL Server database engine generates an execution plan (consuming CPU and memory resources)

to get slab usage (IT organizes memcached return values into easy-to-read formats). You can get the script from the following address:Http://code.sixapart.com/svn/memcached/trunk/server/scripts/memcached-toolThe method of use is also extremely simple:$ memcached-tool Host Name: Port optionYou do not need to specify options when viewing slabs usage, so you can use the following command:$ memcached-tool Host Name: PortThe information obtained is as fol

This article will use a GitHub open source component technology to read and write Siemens PLC data, using the Ethernet-based TCP/IP implementation, no additional components, read operations as long as the background thread will not be stuck thread, this component supports super convenient high-performance read and write operationGitHub Address: Https://github.com

1. preparation. The VFS layer and some initialization operations are used to prepare for real read operations. First, the user process sends a read request through the read system call: File/fs/read_write.cAsmlinkage ssize_t sys_read (unsigned int FD, char _ User * Buf, size_t count){Struct file * file;Ssize_t ret =-ebadf;Int fput_needed; File = fget_light (FD,

Winform centralized training series, winform Series I have recently had a training session. It is better to write a PPT than to write a blog. Sharing is the professional sentiment of programmers. Therefore, I am going to write a series of articles developed by Winform. For junior developers, it should be useful. It may be difficult to make mistakes or immaturity

[20 of the algorithm series] Trie, Series II trie I. Overview The word search tree, also known as the Trie tree, is a tree structure and a variant of the hash tree. A typical application is used for statistics, sorting, and saving a large number of strings (but not limited to strings). Therefore, it is often used by the search engine system for text word frequency statistics. Advantage 2 Use stringPublic p

"PHP Core Exploration series articles" series of technical Articles to organize collections PHP Kernel Exploration Series Articles favorites collection of knowledge about the PHP kernel, to PHP advanced friends to provide PHP core knowledge points to explore 1PHP kernel exploration: Starting with the SAPI interface 2PHP kernel exploration: Start and end of

This article describes the use of read () and read (byte[] b) in Java InputStream to see this article for friends who need to know about these two functions.Both of these methods exist as abstract methods in the abstract class InputStream,The JDK API describes both of these:Read (): reads the next byte of data from the input stream, returning an int byte value in the range 0 to 255. Returns 1 if no bytes ha

The read () and read (byte [] B) methods exist as abstract methods in the abstract class inputstream. The latter is not. The JDK API describes the two methods as follows: 1: Read ():Reads the next byte of data from the input stream, and returns the int byte value ranging from 0 to 255. -1 is returned if no Bytes are available because it has reached the end of the