how long 500 seconds

How to optimize mysql 500 million data query in more than 2013 seconds? This post was last edited by dz215136304 in 1511-08-: 33: 52 In linux & nbsp; mysql & nbsp; 3 million how to optimize data query for more than 500 seconds, where pid has been

Problem When we inherit the canvas class in J2ME, we will realize the runnable interface and realize the effect of multithreading. Personally think that actually this thread is just a timer function, can be used a timer or a inner class to achieve

E-commerce's second kill and snapped up, for us, is not a strange thing. However, from a technical point of view, this is a huge test for web systems. When a web system receives tens or even more requests within a second, the optimization and

problemGive you 1 files bigdata , size 4663m,5 billion, the data in the file is random, such as the next line an integer:61963023557681612158020393452095006174677379343122016371712330287901712966901...7005375Now you want to sort this file, what's

I. Challenges posed by large-scale concurrencyIn the past work, I have been faced with 5w per second high concurrent kill function, in this process, the entire web system encountered a lot of problems and challenges. If the web system does not do a

E-commerce's second kill and snapped up, for us, is not a strange thing. However, from a technical point of view, this is a huge test for web systems. When a web system receives tens or even more requests within a second, the optimization and

E-commerce's second kill and snapped up, for us, is not a strange thing. However, from a technical point of view, this is a huge test for web systems. When a web system receives tens or even more requests within a second, the optimization and

1. Please wait until then. First meeting. 2. There are too many other users. Please take care of it. 3. zookeeper has been completed before (zookeeper) has been released. Please take care of it. 4. When there are too many threads, there are too many

E-commerce's second kill and snapped up, for us, is not a strange thing. However, from a technical point of view, this is a huge test for web systems. When a web system receives tens or even more requests within a second, the optimization and

Editor's note: high-availability architectures share and disseminate a typical article in the architecture area , this is the record of the Pang of the cloud operations in Beijing on the "million concurrent" offline event of March 27.Not long ago,