Python Pool

In mailbox rapid expansion process, one of the performance problems is the MongoDB database level write lock, the time spent in the lock waiting process, directly reflects the user's use of the service process delay. To address this long-standing problem, we decided to migrate a common set of MongoDB (storing mail-related data) to a separate cluster. According to our inference, this will reduce the lock latency by 50%, and we can add more fragments, and we expect to be able to optimize and manage different types of data independently. We start from Mon ...

First, the association Spark and similar, Spark Streaming can also use maven repository. To write your own Spark Streaming program, you need to import the following dependencies into your SBT or Maven project org.apache.spark spark-streaming_2.10 1.2 In order to obtain from sources not provided in the Spark core API, such as Kafka, Flume and Kinesis Data, we need to add the relevant module spar ...

Instagram 5 Legendary engineers behind the technical Revelation (PPT) published in 2013-03-28 22:13| Times Read | SOURCE csdn| 0 Reviews | Author Guo Shemei Postgresqlredismemcachedinstagram Open Source AWS Summary: Instagram, a photo-sharing app developer based on iOS and Android, with a unique operating philosophy, with only 5 engineers, Team A total of 13 people in the case of success to their own 7 ....

The end of 2013, we based on the past year's user access, exchange and sharing and the project itself update frequency and other aspects of the open source China's nearly 30,000 open source software statistics, so that the top 10 most popular open source software, for reference only. The list is mainly for domestic open source software, the list of 10 open source software is not the same type, although put together is not very scientific. 　　We only select from a few angles, including user access, software updates, and user discussion of the software. 1. Goagent ...

I have experienced the myth world from microcomputers to supercomputers, from email to Internet, and from parallel computing (parallel comouting), to decentralized computing (decentralized computing), To the application of distributed Computing (distributed computing), by Telnet remote in the large computer with more than 3,000 CPUs (such as Japan's so-called fifth generation of computers) on the use of 1024 CPUs to verify their own ...

With the deepening of the Internet, cloud computing has a far-reaching impact on the existing IT technology, this paper focuses on the analysis of two changes. The impact of cloud computing on the software industry 1. A revolutionary change in the software development Model 1 The development model is transformed from stand-alone to cloud computing. The resources used by stand-alone software are based on PC physical resources (such as PC memory and hard disk); In the era of cloud computing, this pattern of development is completely changed, the resources used are no longer limited by physical resources, the use of memory can be based on the data Center server cluster ...

Several years of work down, also used several kinds of database, accurate point is "database management system", relational database, there are nosql. Relational database: 1.MySQL: Open source, high performance, low cost, high reliability (these features tend to make him the preferred database for many companies and projects), for a large scale Web application, we are familiar with such as Wikipedia, Google, and Facebook are the use of MySQL. But the current Oracle takeover of MySQL may give us the prospect of using MySQL for free ...

With the deepening of the Internet, cloud computing has a far-reaching impact on the existing IT technology, this paper focuses on the analysis of two changes. A． Cloud computing's impact on the software industry is 1. A revolutionary change in the software development Model 1 The development model is transformed from stand-alone to cloud computing. The resources used by a stand-alone version of the software, is based on PC physical resources (such as PC memory and hard disk); In the era of cloud computing, this development pattern completely changed, the use of resources are no longer limited by physical resources, the use of memory can be based on the data Center server cluster, database can ...

With the deepening of the Internet, cloud computing has a far-reaching impact on the existing IT technology, this paper focuses on the analysis of two changes. A． Cloud computing's impact on the software industry 1. A revolutionary change in the software development Model 1 The development model is transformed from stand-alone to cloud computing. The resources used by a stand-alone version of the software, is based on PC physical resources (such as PC memory and hard disk); In the era of cloud computing, this development pattern completely changed, the use of resources are no longer limited by physical resources, the use of memory can be based on the data Center Server group, the database can be through ...

One of the features of cloud computing is the ability to move applications from one processor environment to another. This feature requires a target operating system to receive it before moving the application. Wouldn't it be nice if you could automate the installation of a new operating system? A well-known feature of the intel™ architecture system is the ability to install Linux automatically. However, installing Linux automatically is a tricky issue for System P or IBM power BAE using the hardware management console. This article discusses the solution of ...