Tomcat Server Wiki

1. Kernel-Level Vulnerability Dirty COW Dirty Cow Vulnerability. The COW mechanism of the Linux kernel memory subsystem competes with memory writes, causing read-only memory pages to be tampered with. Impact: Linux kernel> = 2.6.22 Vulnerability Affected: Low privilege Users can write to this read-only memory page (including a file read-only to this user on a writable file system) and to root PoC Reference: https://github.com/dirtycow/di ...

Not long ago, I wrote some articles about how my company went into the cloud storage. Specifically, we are mainly taking SaaS (software as a service) path. This is my solution to the problem of "Shoemaker's children have no shoes to wear". Although we are leading many people to quickly enter the cloud storage and large data era, we still ignore the use of their own equipment. This has led to many problems with cloud storage. 1. Backup unless you have two remote data centers or Dr Centers, and make sure nothing happens at the same time in two centers. Only the traditional "it ...

Many companies have been ready to lead the company into the cloud storage era, but we can not ignore the use of their own equipment. This article takes stock of some of the things that users need to be aware of when using cloud storage, including the areas where cloud storage applies, and what you need to think about before you do cloud storage. Backup unless you have two remote data centers or Dr Centers, and make sure nothing happens at the same time in two centers. It is not enough to back up data in a traditional way where they are. Control if you need a private or public repository, you should not hesitate to choose GI ...

Lucene is the most used open source search engine. This article does not discuss how Lucene updates (http://issues.apache.org/jira/browse/LUCENE-1313) in real time, and how to modify the Lucene scoring mechanism to add such as PageRank scoring factor,     This article only discusses distributed Lucene. When it comes to Lucene, it's generally mentioned that Nutch,hadoop was first Doung Cu ...

Absrtact: When planning to develop a website, what language to choose, is the first problem to face. The current mainstream web development language has asp.net, PHP, JSP; As Ms veteran of the last century ASP, it is no longer mentioned, if it is because of maintenance reasons and must use, in the plan to develop a website, choose what language, is the first problem to face. The current mainstream web development language has asp.net, PHP, JSP; As Ms last century veteran ASP, no longer mentioned, if it is because of maintenance reasons must be used, ...