Apache Cassandra is an open-source Distributed Key-value storage system. It was initially developed by Facebook to store extremely large data. Cassandra is not a database, it is a hybrid non-relational database, similar to Google's bigtable. This
Transaction design strategies for MongoDB, Cassandra, and HBase
NoSQL databases (such as MongoDB, Cassandra, Hbase, DynamoDB, and Riak) make application development easier. They provide quite flexible data models and rich data types, and are easier
Avro is one of the Hadoop projects. It is mainly used to support data-intensive applications. It defines a data format and supports this format in multiple programming languages. We primarily use Cassandra and RPC to implement mutual calls between
In traditional file system, it is necessary to maintain the hierarchical structure of the directory, to use complex structure such as dentry,inode,directory to save the metadata information, and more and more system consider using Key-value form to
What is performance analysis?performance analysis is a measure of the relative performance of your application at the code level. The events that the profiling will capture include: CPU usage, memory usage, function call length and times, and call
http://blog.csdn.net/byane/article/details/6928519In traditional file systems, it is necessary to maintain the hierarchy of directories, to store metadata information using complex structures such as dentry,inode,directory, and more and more systems
The world's largest PHP site Facebook backstage Technology Quest
At this year's Facebook F8 developer Conference, 51CTO takes you through its latest open-plan strategy and semantic search. Today, we'll look at the software behind Facebook and see
PHP performance analysis article 1: Xhprof & amp; Xhgui introduction note: This is the first article in our PHP application performance analysis series. read Article 2 to learn more about xhgui, article 3 focuses on performance tuning
This article describes how to use XHProf and XHGui in Linux to analyze the PHP running performance. this solution supports Apache and Nginx servers and multiple database environments. For more information, see
What is performance
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