Tomcat High Availability

Improve Network Service resource quality, save IT cost, realize multi-point disaster prevention backup "server +IDC" is the basic mode of enterprise building IT system, but now, the pattern is changing. The disadvantages of traditional server model are obvious, the application workload is constantly changing, the single application server is often unable to meet the demand, and the rapid increase in the number of servers, will cause the enterprise capital and operating costs rise. At the same time, increasingly complex IT systems and data centers can be difficult to quickly configure and efficiently manage to meet changing needs. In every it encounter bottleneck ...

Now almost any application, such as a website, a web app and a mobile app, needs a picture display function, which is very important for the picture function from the bottom up. Must have a forward-looking planning picture server, picture upload and download speed is of crucial importance, of course, this is not to say that it is to engage in a very NB architecture, at least with some scalability and stability. Although all kinds of architecture design, I am here to talk about some of my personal ideas. For the picture server IO is undoubtedly the most serious resource consumption, for web applications need to picture service ...

Nifty has been operating the site for a long time, and after the launch of the WYSIWYG web platform based on HTML5, users have built more than 54 million sites in the company, and most of them have less than 100 solar PV. Since the PV of each page is low, the traditional caching strategy does not apply. Even so, however, the company has done so with only 4 Web servers. Recently, Wix chief back-end engineer Aviran Mordo in "Wix architecture ...

"Editor's note" WiX has been operating the site for a long time, and after the launch of the WYSIWYG web platform based on HTML5, users have established more than 54 million sites in the company, and most of these sites have less than 100 solar PV. Since the PV of each page is low, the traditional caching strategy does not apply. Even so, however, the company has done so with only 4 Web servers. Recently, WiX chief back-end engineer Aviran Mordo in "...

Today, more and more PAAs (platform service) providers, in the field of cloud computing has launched a fierce competition. Cloud computing works well with the development mechanism for deploying applications.     IAAS providers provide basic computing resources, SaaS providers provide online applications such as online CRM, and PAAs offerings provide developers with a one-stop service that allows our applications to start and run quickly without paying attention to some infrastructure issues. As a service provided on the PAAs platform ...

There seems to be a plot in a thriller that says, "It's easy ... It's so easy. "And then all things began to fall apart. When I started testing the top-tier Java cloud Computing in the market, I found that the episode was repeating itself. Enterprise developers need to be more concerned about these possibilities than others. Ordinary computer users get excited when there are new scenarios in cloud computing that make life easier. They will use cloud-based emails and if the emails are lost they can only shrug their shoulders because the electrons ...

Editor's note: Wang Lijun, the author of the Sina Cloud computing SAE, participated in and was responsible for the development of the internal dynamic platform (private PAAs) and later led the entire SAE (public PAAs) project. After leaving Sina, set up the Nicescale, is now mainly for developers and enterprises to provide a simple and easy to use server management platform, can manage physical machines, virtual machines, cloud host even Docker containers. The product is still in beta, the official said in early 2014 to complete a round of financing, the specific amount is ominous. This article for the author of the past ten years of work ...

After SOA and WEB 2.0, cloud computing has become the hottest it technology today. As Microsoft's Chinese head, Dr. Zhang, says, cloud computing is changing the entire IT industry. So what is cloud computing? Why is cloud computing so powerful? Let's just quote Microsoft CEO Steve Ballmer, "Cloud is a revolutionary computing model that connects the computing devices at hand with the processing and storage capabilities of large data centers, Transform computing from limited resources to almost limitless platforms, regardless of where you are, can put users with them ...

With the rapid development of cloud computing, the application of cloud computing in various industries and fields has become an unstoppable trend. The biggest example of cloud computing applications today is the online video leasing service, Netflix, which uses cloud computing to implement it architecture. It's called the biggest because Netflix has a huge monthly video access rate of over 1 billion times. The Linux Foundation Collaboration Summit was held in San Francisco recently, Cockcroft, director of Netflix's Cloud systems architecture, revealed that Netflix's Linu ...

After SOA and WEB 2.0, cloud computing has become the hottest it technology today. As Microsoft's Chinese head, Dr. Zhang, says, cloud computing is changing the entire IT industry. So what is cloud computing? Why is cloud computing so powerful? Let's just quote Microsoft CEO Steve Ballmer, "Cloud is a revolutionary computing model that connects the computing devices at hand with the processing and storage capabilities of large data centers, Transform computing from limited resources to almost unlimited platforms, regardless of where you are, you can take users with them ...