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Recently, I had some development ideas. So I read some books on business models. Among them, this free book has made me think for a long time.Free is written by Anderson, who is also the author of Long Tail theory. I have a deep understanding of the business model. If the model in the book "Long Tail Theory" is the United States, the book "free" is a lot of reference to the most practical cases in China. Ob

A recently maintained network server encountered performance problems, so it made major changes to the original program framework. Most of the changes are the thread working mode and data transmission mode. The final result is to change the lock usage mode. After some improvement, the GMB Nic can basically work at full speed. After the performance was up to standard, I was wondering if I could use a more lightweight lock or remove the lock. For this reason, I searched some research results and m

Basic concepts of three states: 1, temporary State (Transient): Also called Free State, exists only in memory, and there is no corresponding data in the database. Object created with new, it is not persisted, is not in session, the object in this state is called a temporary object; Create a Transient object user user = new user (); User.setname (userName); User.setpassword ("test"); User is still a transient object 2, Persistence State (persi

A recently maintained network server encountered performance problems, so it made major changes to the original program framework. Most of the changes are the thread working mode and data transmission mode. The final result is to change the lock usage mode. After some improvement, we can basically achieve GMB Network Adapter working at full speed. In After the performance was up to standard, I was wondering if I could use a more lightweight lock or remove the lock. For this reason, I searched s

The author of the blog used to use free home space, although it is free, but let me have a lot of resentment, such as not to use Feedsky, speed is not stable, some places in the country can not open, at any time there is the risk of shielding, space function limit ... In view of these considerations, the author finally decided to change a pay space, is the money to buy a convenient. The following article ma

Freedigits2007/02/26 To provide you with a free U.S. telephone number, and send 0.5 U.S. dollars, but call China will be prompted not enough money, hit the United States no problem. A free fax service is also provided, which forwards faxes to your email address in the past. (Thanks to the fountain for this information) --> Love Communication2007/02/20 Send

Basic concepts of three states:1, transient State (Transient): Also called Free State, exists only in memory, and there is no corresponding data in the database. Object created with new, it is not persisted, is not in session, the object in this state is called a temporary object;2, Persistence State (persistent): associated with the session and has corresponding data in the database. has been persisted and added to the session cache. objects, such as

Basic concepts of three states:1. Temporary identity (Transient): Also known as Free State, it exists only in memory, and there is no corresponding data in the database.Object created with new, long, not in session, the object in this state is called a temporary object;2, Persistence State (persistent): associated with the session and has corresponding data in the database.Has persisted. Added to the session cache. objects, such as those saved through

Basic concepts of three states:1, temporary State (Transient): Also called Free State, exists only in memory, and there is no corresponding data in the database. Object created with new, it is not persisted, is not in session, the object in this state is called a temporary object;2, Persistence State (persistent): associated with the session and has corresponding data in the database. has been persisted and added to the session cache. objects, such as

Basic concepts of three states:1, transient State (Transient): Also called Free State, exists only in memory, and there is no corresponding data in the database. Object created with new, it is not persisted, is not in session, the object in this state is called a temporary object;2, Persistence State (persistent): associated with the session and has corresponding data in the database. has been persisted and added to the session cache. objects, such as

Basic concepts of three states:1, transient State (Transient): Also called Free State, exists only in memory, and there is no corresponding data in the database. Object created with new, it is not persisted, is not in session, the object in this state is called a temporary object;2, Persistence State (persistent): associated with the session and has corresponding data in the database. has been persisted and added to the session cache. objects, such as

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This is a "free online game" of the era, almost all online games have played a "free" or even "permanent free" signs. But whether it is really "free" is not easy to say, many of the young players trapped in the "free online games" is a huge expense, even many of them to play

10 websites that provide free PHP script download and 10 free php scripts. 10 websites that provide free PHP script downloads and 10 free php scripts. This article will focus on the free resource download site for 10 PHP scripts. We previously recommended 16 popular websites

Principle of C language free function ---------- [Badboy], free function badboy Today, I saw such a problem on the Internet: "If malloc has a string of memory, then it changes the size of the string and asks if some memory is not released ." I did not think about this issue carefully before. Of course, I think it will definitely be released, but I have never understood the principle of

Principle of C language free function ---- [Badboy], free function badboyToday, I saw such a problem on the Internet: "If malloc has a string of memory, then it changes the size of the string and asks if some memory is not released ." I did not think about this issue carefully before. Of course, I think it will definitely be released, but I have never understood the principle of