SEARCH KEYWORD -- DATA STORAGE


  Meta tag in HTML header

In server response, we can use response.setHeader() to set the meta information in header of a HTML page. The usage is response.setHeader(name,context); meta is used to simulate the response header of HTTP protocol in HTML page. It should be put between the <head> and </head> tag. 1. <meta name="Generator" content="" > <!--This is to specify the tool which generates this page such as Microsoft FrontPage 4.0 etc --> 2. <meta name="keywords" content=""> <!-- To tel...

   HTTP,meta,HTML,head     2013-05-22 11:34:08

  Why localStorage only allows to store string values

localStorage allows data to be stored in browsers across sessions, the data will be there even though the session is expired. It is frequently used to store static data so that they can be loaded when needed. But as per spec, it says that the keys and the values are always strings (note that, as with objects, integer keys will be automatically converted to strings). Why cannot store the object as it is? Take a look at an example: var str = "test"; localStorage.setItem("str", str); cons...

   JAVASCRIPT,LOCALSTORAGE     2020-04-05 00:54:29

  Exit main thread and keep other threads running in C

In C programming, if using return in main function, the whole process will terminate. To only let main thread gone, and keep other threads live, you can use thrd_exit in main function. Check following code: #include #include #include int print_thread(void *s) { thrd_detach(thrd_current()); for (size_t i = 0; i < 5; i++) { sleep(1); printf("i=%zu\n", i); } thrd_exit(0); } int main(void) { ...

   C LANGUAGE,MULITHREAD,MAIN THREAD     2020-08-14 21:20:04

  How Do You Find the Best Password Managers?

Looking for a smart way to protect your range of electronic devices? Most of us access tons of websites and it could be difficult to store our passwords. It is important to not reuse store passwords that are easily identifiable. Keeping your information secure is more important than ever. Data breaches can occur anytime and sometimes takes months to discover. Sometimes, maybe, they aren’t. Target is a data breach, for instance, took months to discover. Information was leaked online from ce...

       2017-05-11 06:33:55

  Alibaba pays all cash to acquire Youku Tudou

Alibaba announced that it had signed the agreement to acquire "China's YouTube" YouKu Tudou on November 6 Beijing Time. This deal will make Alibaba the leading entertainment and media company in China. The highlight of this deal is that Alibaba will pay all cash. When this acquisition is completed, shareholders from Youku Tudou can get cash with $27.60 per ADS. The board has approved this acquisition and they are asking the shareholders to vote to approve this deal. This deal is expected to be ...

   CHINA,ALIBABA,YOUKU,NEWS     2015-11-06 20:26:31

  Google releases Analytics real time API

According to Tech Crunch, Google finally released its Analytics real time API. Although this feature was launched two years ago, there was no convenient way for webmasters to adjust the data so that they can be viewed properly. Now developers can use the API to get what they want and utilize these data to do what they want to. Developers need to apply for using the API now. Once you get access to this API, then you can search your own real time data and utilize these data as you want to. For ex...

   Google Analytics,API,Real time     2013-08-02 00:05:56

  How does PHP session work?

This article is about how PHP session works internally. Below are the steps : 1. Session in PHP is loaded into PHP core as an extension, we can understand it as an extension. When session extension is loaded, PHP will call core functions to get the session save_handler, i.e interface or functions for reading and writing session data. By default, PHP will handle session data by writing and reading files on the server. But PHP also supplies custom methods for handling session data, we can use sess...

   PHP, session, mechanism     2012-12-28 13:36:49

  How Kafka achieves high throughput low latency

Kafka is a message streaming system with high throughput and low latency. It is widely adopted in lots of big companies. A well configured Kafka cluster can achieve super high throughput with millions of concurrent writes. How Kafka can achieve this? This post will try to explain some technologies used by Kafka. Page cache + Disk sequential write Every time when Kafka receives a record, it will write it to disk file eventually. But if it writes to disk every time it receives a record, it would ...

   BIG DATA,KAFKA     2019-03-08 09:42:57

  Consistency between Redis Cache and SQL Database

Nowadays, Redis has become one of the most popular cache solution in the Internet industry. Although relational database systems (SQL) bring many awesome properties such as ACID, the performance of the database would degrade under high load in order to maintain these properties. In order to fix this problem, many companies & websites have decided to add a cache layer between the application layer (i.e., the backend code which handles the business logic) and the storage layer (i.e., the SQL d...

   REDIS,CACHE,DATABASE     2019-07-07 08:14:16

  Introduction to GoLang generics and advanced usage

Generics in Go allow you to write code that can work with multiple types of data, without having to write separate versions of the code for each type. This can make your code more flexible and easier to maintain, as you only need to write and test the code once, rather than maintaining multiple versions. To use generics in Go, you first need to define a type parameter, which is a placeholder for the type that the code will work with. For example, you might define a type parameter called "T" like...

   GOLANG,GENERICS     2022-12-17 05:12:21

RECENT