disadvantages of mongodb

Advantages and disadvantages of using session variables in session| variable ASP (Author: Green Apple Computer Studio) Many people use session variables to develop ASP (Active Server Pages). These variables are very similar to variables that are common in any programming language and have the same advantages and drawbacks as common variables. Any command requires run time and storage space (even Goto ' s statement), and the session variable also need

Tags: primary key index replace strong href idea key exploit demand databasehttp://blog.csdn.net/superit401/article/details/51291603 Advantages and disadvantages of building indexes: Why do you create an index? This is because creating an index can greatly improve the performance of the system.First, by creating a unique index, you can guarantee the uniqueness of each row of data in a database table.Second, the speed of data retrieval can be greatly

Label:SQL Server View we often use the following to introduce you to the advantages and disadvantages of using SQL Server view, you want to have more knowledge of your SQL Server view. You must understand the pros and cons of the view before you design it, and the SQL Server view has some of the following advantages: Simplicity. Views not only simplify the user's understanding of the data, they can also simplify their operations. Those queries that ar

Our company's database is all using the GUID key, many people are accustomed to use the INT key. So, here's a summary of the two data types of the master key for a comparison.Advantages of using the INT key:1, need very small data storage space, only need 4 byte.2, insert and UPDATE operations use INT for better performance than GUIDs, so using int will improve the performance of your application.3, index and join operations, INT is the best performance.4, easy to remember.5, support through the

Tags: style blog http color ar using SP strong dataOur company's database is all using the GUID key, many people are accustomed to use the INT key. So, here's a summary of the two data types of the master key for a comparison.Advantages of using the INT key:1, need very small data storage space, only need 4 byte.2, insert and UPDATE operations use INT for better performance than GUIDs, so using int will improve the performance of your application.3, index and join operations, INT is the best per

The first two articles reprinted the nosql article, which introduced the benefits of nosql and analyzed the advantages and disadvantages between nosql and relational databases. In fact, nothing is absolutely good, absolutely bad; as long as it is appropriate, it is good. When appropriate, use the appropriate technology, that is, OK [if you are well off, it will be sunny] Starting from this article, we will be familiar with nosql, a simple database

[MongoDB] Build a mongodb sharding cluster on the windows platform (2). mongodb Cluster In the previous blog, we talked about the main principles of Mongodb sharding clusters. In this blog, we will mainly describe how to build a sharded cluster. There are two steps to configure a sharding cluster: first, start all the

Talk about the advantages and disadvantages of asp,php,jsp http://hi.baidu.com/lhyboy/item/f95bac264c38830d72863e41ASP, PHP, ASP, JSP and other mainstream web development language comparisonToday, an article on the mainstream website development language-"ASP, PHP, ASP. NET, JSP and other mainstream web development language comparison", and everyone together to exchange a variety of mainstream website development language advantages and

The full duplex of a switch means that the switch can receive data while sending data. It cannot directly connect the input/output ports with different rates and is prone to packet loss, in particular, it supports switching between ports at different speeds to ensure collaboration between high-speed ports and low-speed ports. With the gradual development of network applications, telecom-grade switches, especially layer-3 switches, have become the focus of competition in today's market. However,

(1) circuit switching: Before communication, a physical channel exclusive to both parties must be established between the two parties (composed of the switching devices and links of both parties ), therefore, it has the following advantages and disadvantages. Advantages: ① Because the communication line is dedicated to users of both parties, the data transmission latency is very small. ② Once a physical path is established between the communication pa

PHP is a popular open-source server-side scripting language at home and abroad. It can meet the development needs of large, medium and small projects. We will introduce several mainstream PHP frameworks and their advantages and disadvantages in this article and share them with you as a reference. The main reference of ph php is a popular open-source server-side scripting language at home and abroad. It can meet the development needs of large, medium a

Original article translated from: Simplified. If the database can run continuously, of course, it is best. However, this is often costly. Sometimes it is even more advantageous than what it gets. In the sqlserver2008 database, there are many high availability solutions. For example, you can use failover clusters, database images, log transmission, replication, and other means to improve the high availability of the database. Because there are many solutions, the database administrator has to m

I. Ordinary table (Heap table): For most design scenarios, there are advantages and disadvantages. Advantages:1. Simple and convenient grammar2. Suitable for most scenes Disadvantages:1. Update log cost is large2.Delete Unable to free space (HWM high Water mark does not fall)3. Table record too large retrieval too slow4. Index back to table read overhead very much5. Even if the orderly insertion, it is di

disadvantages. The reference mode is regarded as a standardized mode, which reduces data storage redundancy and makes the structure design fresh and simple. In line with our general design principles, the communication overhead for obtaining complete data is relatively large, and the atomicity of operations on multiple documents is not guaranteed at the MongoDB level. The nonstandard nested design mode has

MongoDB learning notes 01 MongoDB installation and use, mongodb learning notes Recently, due to work needs, I began to contact mongodb, so I began to study mongodb. The first step of the study was naturally from installation and use. there will certainly be more research and

= "content ";Static string content_type = "ctype ";Static string content_length = "clen ";Static string zip = "Zip ";3. the maximum number of indexes in a single MongoDB table is 64.The maximum data volume for non-index sorting is 4 MB. If the maximum data volume is exceeded, an error is returned and the system exits.We recommend that you set the where condition on the index field as much as possible. You must create an index for the sorting field. T

1. Postgraduate Entrance Exam Benefits: Delay employment pressure and delay the arrival of employment periods; in some cities, some schools can solve the issue of hukou for research institutes to improve their academic qualifications and enhance their competitiveness; The State has introduced a new expansion policy for the Research Institute. It is relatively easy to take a postgraduate entrance exam and get a higher diploma. There is a creative idea in the academic field. You can keep workin

"Abstract" Linux User Configuration device-driven development: Not all device drivers are written in the kernel, and in some cases, writing drivers in user space can better address the problems encountered. This paper analyzes the advantages and disadvantages of user-driven drivers.1. Advantages of User space driver1, can be linked with the entire C library.2, in the drive can use floating point number, in some special hardware, may need to use floati

Some CPUs are already integrated graphics in the inside, before buying can understand the integration of the graphics card in the inside, according to their own needs to buy. Below I tell you a simple introduction of the advantages and disadvantages of integrated graphics. Method/Step 1, here first to say that the 1th, some motherboards are not supported to install independent graphics, which are relatively early motherboards, or a very

The advantages of Ajax The advantages that Ajax brings to us are basically deeply appreciated, and here I just briefly say a few things: 1, the biggest point is the page does not refresh, in the page with the server communication, to the user experience is very good. 2, the use of asynchronous way to communicate with the server, do not need to interrupt the user's operation, with more rapid response capabilities. 3, can put some of the previous server burden to the client, the use of idle cl