MongoDb is a product between NOSQL and relational database. MongoDb: a distributed file storage based database, written in C + +, can be used to store a large number of documents, such as reviews of goods.Column storage database: HBase, easier to expand columns.Key value: you must master redis, the current mainstream.Most of the time, we need to calculate the whole graph to get the required information, and this structure is not very good for distributed cluster scheme. For example, the shortest path addressing, N degree relation searching and so on Using graph structure correlation algorithm. Social networks, recommendation systems, etc. Query performance is not high, and lack of unified query syntax. The requirement of data structure is not strict, the table structure is changeable, and it is not necessary to define the table structure in advance like the relational database Key Value pair corresponding to key Value, and Value is structured data Web application (similar to key Value, Value is structured, but the database can understand the content of Value) The search speed is fast, the scalability is strong, and the distributed expansion is easier It is stored in column cluster, and the data in the same column exists together Key points to the key Value pair of Value, which is usually implemented by hash tableĭata is unstructured and is usually treated as string or binary data
In the era of big data, if it is a relational database, it is really difficult to add a field to a table with a large amount of dataįour categories of NOSQL NOSQL classificationĬontent caching is mainly used to deal with the high access load of a large amount of data, and also used in some log systems. Flexible data model: it doesn't need to design database in advance, and can store custom data format at any time.NoSQL's cache record level is fine-grained, so its performance is much higher. High performance: NoSQL databases have very high read-write performance, especially in large amounts of data.Invisibly, it brings scalable capabilities at the architecture level. There is no relationship between the data, which is very easy to scale. Easy to expand: NoSQL database has many kinds, but one common feature is to remove the relational characteristics of relational database.You can store data in the form of key value, map. The generation of NoSQL database is to solve the challenges brought by large-scale data collection and multiple data types, especially the big data application problems.įor example, personal information of various types of users, social network, geographical location, etc The storage of these data does not need a specific type, and it can be easily expanded. With the rise of Internet web2.0 website, the traditional relational database has been unable to deal with web2.0 website, especially the super large-scale and highly concurrent SNS type web2.0 pure dynamic website, and many difficult problems have appeared. NoSQL refers to non relational database, which is different from relational database. If he wants to study, he can search by himself. He has b station number and WeChat official account. Users of Xshell gave it a rating of 4 out of 5 stars.Learn from the redis tutorial of "madness theory". Xshell runs on the following operating systems: Windows. It was initially added to our database on. The latest version of Xshell is, released on. It was checked for updates 220 times by the users of our client application UpdateStar during the last month.
XSHELL 5 PRODUCT KEY VN SOFTWARE
Xshell is a Freeware software in the category Internet developed by NetSarang Computer, Inc. Its user interface is intuitive and it provides advanced users with powerful features such as local commands, searching with regular expressions, dynamic port forwarding, international languages and so forth. Xshell is designed to satisfy both beginners and advanced users.
SSH (Secure Shell) protocol supports encryption and user authentication for secure connections over the Internet, and it replaces legacy protocols such as TELNET and RLOGIN.
XSHELL 5 PRODUCT KEY VN WINDOWS
It allows users to gain access to Unix/Linux hosts easily and securely on a Windows workstation.
XSHELL 5 PRODUCT KEY VN SERIAL
Xshell is a powerful SSH1, SSH2, SFTP, TELNET, RLOGIN and SERIAL terminal emulator for Windows platforms.