advantages and disadvantages of microservices

I. Why should I create an index (advantage )? Creating indexes can greatly improve the system performance. First, By creating a unique index, You can ensure the uniqueness of each row of data in the database table. Second, This can greatly speed up data retrieval, which is also the main reason for creating an index. Third, It can accelerate the connection between tables, especially for Data Reference integrity. Fourth, When you use grouping and sorting clauses to retrieve data, you can also

Analysis on advantages and disadvantages of converting PHP to ASP. NET Whether you have selected PHP or not, you can view the price, speed, efficiency, security, platform support, and open-source performance in the following table, we can all tell that its strength is far better than its weakness. The only disadvantage is the lack of object-oriented support. However, this is a relatively secondary defect.

between the dynamic proxy of JDK and the cglb proxy. In general, JDK proxy is encouraged, because services generally abstract an interface without introducing new things. If it is a legacy system that has not previously implemented interfaces, you can only use cglib. In general, JDK dynamic proxy is preferred. Although its efficiency does not seem to be comparable to that of cglib proxy, its objects can be released normally after they are used up. However, cglib proxy produces a new class for

Advantages and disadvantages of online and offline data centers The data center is a huge system project. It should be planned and designed in detail before construction, as well as an overall understanding of the application of the data center, the overall running environment of the data center should also be taken into account. The study of various conditions and Influencing Factors of cabling methods no

This article mainly introduces the advantages and disadvantages of the two methods for creating a closure in JavaScript and the related information for difference analysis. If you need it, you can refer to the two methods that are commonly used to create a closure in JavaScript. Constructor method: New function () {var variable ...} Inline execution method: (Function () {var variable ...})();

This article mainly introduces the advantages and disadvantages of the two methods for creating a closure in JavaScript and the related information for difference analysis. if you need it, you can refer to the two methods that are commonly used to create a closure in JavaScript. Constructor method: New function () {var variable ...} Inline execution method: (Function () {var variable ...})();

= $this->_tpl_vars, two variables, takes up more than twice times of memory (although unset dropped after use).2, waste the processor. The Smarty syntax is finally converted to a PHP script for output. Conversion to waste processor resources. If the script is in the compiled cache, it is wasted to determine if there is a compiled script's processor time.3, the syntax is not compatible. Smarty has its own set of syntaxes, incompatible with PHP, and incompatible with other template languages. The

Advantages of IFRAME:1.iframe can display the embedded Web page intact.2. If there are multiple pages referencing the IFRAME, then you only need to modify the contents of the IFRAME, you can implement the invocation of each page content changes, convenient and quick.3. Web pages if the header and version are the same for a unified style, you can write a page that can be nested with an IFRAME to add code reuse.4. If a slow-loading third-party content l

class method above allows you to arrange a runnable object into the main thread queue,The SendMessage class method allows you to schedule a message object with data to queue and wait for updates.In summary: the simple use of data asynctask: the implementation of simple code, a lot of data and complex use of handler+thread: compared to Asynctask to better use of system resources and efficient .Thus, to make corrections to the previous blog, this is the correct use of Asynctask:public class Downl

conditioning is clear, obviously when the value of n is larger is our best choice.Summarize:At this point is the maximum number of 3, the first three scenarios are superior to the fourth bubble sorting scheme, the first solution code is the least amount, the fastest solution, so at this time we should choose the first solution, second and second scenario. Second, the third solution when seeking to compare the maximum value of a small number of times, the logic is relatively clearer, but when th

, because the price of the server itself has the advantage, if you buy the server hosting fee is usually higher than our price a lot.If you buy a server alone and find the host alone not only the cost rise and once there is a problem, the first to determine the server and the network which is a problem, more shifting, renting our server, whether it is a server problem or network problems are our responsibility.Dongguan City, a network Technology Co., Ltd. is a professional engaged in server host

procedure. The disadvantage of stored procedures 1: Debugging trouble, but with PL/SQL Developer debugging is very convenient! 　　compensate for this shortcoming. 2: Porting issues, database-side code is of course related to the database. 　　However, if you are doing engineering projects, there is basically no transplant problem. 3: Recompile the problem because the backend code is compiled before it is run, and if an object with a reference relationship changes, the affected stored procedures, p

Absolute Positioning centering (Absolute centering) technology We often use margin:0 auto to achieve horizontal centering, and always think that margin:auto can not be vertically centered ... In fact, implementing vertical centering requires only declaring the element height and the following CSS: . absolute-center { margin:auto; Position:absolute; top:0; left:0; bottom:0; right:0;} Advantages: 1. Support cross-browser, including Ie8-ie10. 2. No a

As another force of Microsoft in the. NET field, Silverlight has received much attention since its launch. I personally think it has the following advantages and disadvantages: Advantages: Uidesign andCodeSeparated. Now developers don't have to worry about changing the interface. The uidesigner can directly design the interface for development. That is to say,

. The advantages of listing stored procedures are as follows: 1. High execution efficiency. 2. Good security performance. 3. It is very easy to implement requirements for some occasions. Disadvantages: 1. Poor maintainability. 2. Poor readability. When we are modifyingCodeWe can search all through vs to confirm that unnecessary code can be deleted, but the stored procedure is not that easy. O

Advantages and disadvantages of Inheritance Advantages New implementations are easy, because most of them are inherited. It is easy to modify and extend existing implementations. DisadvantagesThe encapsulation is broken because the basic class exposes implementation details to the subclass.White box reuse, because the internal details of the base class are

Since I have not been familiar with Oracle, I have not answered this question. I have checked the information and summarized it as follows. I have the opportunity to study oracle in the future. I don't know how the written test is. I hope God didn't go to WC. Advantages and disadvantages of hot backup and cold backupAdvantages of Hot Backup: 1. Data can be backed up at the tablespace or data file level. T

structure, everything is so simple. A few lines of code can start running, and a few lines of code can be used to output it.It is a model of "Boulevard to Jane".Simple configuration, all the configuration using PHP script configuration, execution efficiency, with basic routing capabilities, to a certain degree of routing, with the initial layout function, to create a certain degree of interface appearance; database layer encapsulation is good, with basic MVC function. Fast and concise, not much

. AdvantagesWe learned from the front that the CSS sprites why the sudden run of fire, with the ability to improve the performance of the site. Obviously, this is one of its great advantages. The large number of images under normal production is now merged into a single image, greatly reducing the number of HTTP connections. The number of HTTP connections has a significant impact on the load performance of the Web site. DisadvantagesAs for maintai

speed, very cool. Hibernate's disadvantage is that the learning threshold is not low, to master the threshold is higher, and how to design O/R mapping, how to balance between performance and object model, and how to use good hibernate needs your experience and ability are very strong. Ibatis is simple to learn, which provides automatic object binding for database queries, and a good experience in SQL usage, perfect for projects that don't have that high object model requirement. Iba