SEARCH KEYWORD -- performance


  Singleton Design Pattern in Java

Singleton is frequently used in applications where resource may be expensive to create and no instance specific state needs to be maintained. For example, when creating database connection, a singleton may be needed. Today we will share the famous Singleton design pattern in Java. 1. Definition Singleton design pattern is a design pattern that restricts the instantiation of a class to one object. It is one of the most well-known design patterns. 2. Application Singleton ...

   DESIGN PATTERN,SINGLETON,MULTITHREAD,JAVA     2020-04-11 02:16:28

  The danger of target=_blank and opener

When want to open a new page in a new tab on clicking a link on a page, the usual way of achieving this is to use target="_blank" property in a tag. However, the use of this leaves space for phishing website. Background parent and opener Before talking about the opener object, let's know a bit about parent object when using iframe. HTML provides a parent object which is used to communicate between the parent page and the embedded iframe element. This parent object can be accessed using...

   HTML,TARGET BLANK,REL NOOPENER,REL NOREFERRER     2018-09-15 04:53:56

  HTTP Server development resource summary

This article summarizes some materials, articles and books I used when learning HTTP Server development. Hope this will help you. RFC and standard documents RFC2616 – Hypertext Transfer Protocol — HTTP/1.1 HTTP protocol standard document, it's an essential reference document for all personnel engaged in the development of the HTTP-related projects, careful study is recommended. RFC793 – TRANSMISSION CONTROL PROTOCOL TCP Protocol standard document The WWW Common Gateway Interfac...

   HTTP Server,Book,Article     2012-09-25 22:46:56

  Telecom elements in WeChat

As an engineer who spends much time on focusing on WeChat like applications(Skype, Fring, Viber, Kik Messenger, WhatsApp, Talkbox, LINE, Kakao Talk) , I would like to share with you the telecom element in WeChat to show the inheritance and integration of traditional telecom services in the Internet service and applications.First, WeChat is an application to send messages, the fully IP-based messaging capabilities may replace the traditional telecom services such as SMS, MMS and VMS ,This is ver...

   WeChat,Telecom operator     2013-04-13 20:29:46

  How Query Optimizer Works in RDBMS

In a previous post, we discussed how the various relational operators are implemented in relational database systems. If you have read that post, you probably still remember that there are a few alternative implementations for every operator. Thus, how should RDBMS determine which algorithm (or implementation) to use? Obviously, to optimize the performance for any query, RDBMS has to select the correct the algorithm based on the query. It would not be desirable to always use the same algori...

   DATABASE,DATABASE DESIGN,DATABASE OPTIMIZATION     2019-04-20 07:26:32

  A Sip of Go Log

Logging is indispensable in any code that we need its support both in debugging and in statistics. However, a package that filled withfmt.Println/fmt.Printf printing various messages can never be considered a read-to-be-adopted package, which can be optimized by a simple change, using Golang’s native log package to print information to standard output or to a file. Then, how to apply the log package? Are there any limitations? If so, can we seek open-source packages? Let&rsq...

   GOLANG,LOGGING     2022-06-16 05:43:24

  Learn about the Benefits of Providing an Engaging Onboarding Experience to your customers

Learn about the Benefits of Providing an Engaging Onboarding Experience to your customers A good onboarding experience helps create a positive first impression and makes your customers feel valued and helps convert leads into paying customers. Effective onboarding experiences also increase conversions and keep customers. High-quality onboarding experiences build brand awareness. Customers notice when businesses take time to engage with them. They even notice when businesses care about them and t...

   ELEARNING,EDUCATION     2022-08-26 21:41:17

  Guide to Clearing Storage Space on a Macbook

Macbooks are pretty notorious when it comes to what storage space you have available. Those few gigabytes that you have will disappear in no time if you are not careful. The whole issue becomes even more problematic for people who are not that familiar with Macbooks or have switched from another computer. And if you do not pay attention, it will not take too long before you have next to no storage space on the hard drive. Leaving only a few gigabytes of free space will significantly reduce the ...

   MACBOOK,APPLE,DATA STORAGE     2020-08-08 00:21:42

  Simple Strategies to Boost Your Android Phone Security

Android is one of the safest operating systems for smartphones and tablets if used correctly. Unfortunately, only a third of Android users use the latest version, and older versions are far more vulnerable than newer ones. Not to mention that many manufacturers take their time when it comes to downloading the latest security patches. A news blog Android Authority ranked the fastest manufacturers in downloading system updates. Here are the results: LG - 78 days Motorola - 88 days HTC - 95 days S...

   ANDROID,DATA SECURITY     2019-02-19 07:36:46

  Display GIF animation while submitting the web form

Internet appears everywhere in our life. Form as a data gathering component is the must have component in a web app. When the page is submitting data to the server, if it takes a relative long time for the backend server to process the data, then the client users will feel lost while waiting for this if he cannot get any indication about what's happening. They may even reclick the button which will cause the data resubmission. This affects the user experience and also the system performance and ...

   HTML,Spin,Submit,Form     2013-05-17 11:47:07

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