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  Engineer mindset in internet companies

This post tries to list down how we keep engineer mindset while doing development work. We engineers are the ones deliver the actual product by writing each and every line of the code, in order to deliver high quality and less buggy code, we should keep reminding ourselves what needs to be paid attention to during our daily development work.  So what is engineer mindset? Engineer mindset is that we should keep in mind that each and every line of code we write should serve the purpose well a...

   ENGINEER MINDSET,INTERNET COMPANY     2021-10-07 04:09:08

  Google+ is sick

Google says that Google+ now has over 170million registered users, but according a new research report of Fast Company about Google+,  Google+ is just a virtual ghost town.This research selected a sample of 40,000 random Google+ users. The result is :The average post on Google+ has less than one +1, less than one reply, and less than one re-shareRoughly 30% of users who make a public post never make a second oneEven after making five public posts, there is a 15% chance that a user will not ...

   Google+,Sick,Research     2012-05-16 05:41:35

  The Pitfall of WebSocket Disconnections Caused by Browser Power-Saving Mechanisms

Preface Recently, while using WebSocket (WS) connections, we encountered frequent disconnection issues, occurring hundreds of times per day for a single user. Although using the auto-reconnect feature of socket.io allowed us to quickly restore connections after disconnections, it did not guarantee that every reconnection would successfully receive WS messages. Therefore, we conducted several investigations and tests. Ultimately, we identified the root cause of the issue: the browser's power-savi...

   WEBSOCKET,JAVASCRIPT,POWER SAVING,TROUBLESHOOTING     2024-06-23 01:19:39

  A boolean value interview question

Someone asked a question on StackOverflow, he was asked an interview question. The question is : Given 3 boolean variables a, b, c, return true if at least 2 out of the 3 are true. He gave the solution as follows :boolean atLeastTwo(boolean a, boolean b, boolean c) {    if ((a && b) || (b && c) || (a && c)) {        return true;    } else {        ret...

   bool,return,expression,conditional     2012-04-30 08:49:32

  WireGuard VPN: Setup WG_VPN client App on Android phone and connect to local WG_VPN server on VM

We will show the detail steps about how to setup the WireGuard VPN client on an Android phone/pad and configure the VPN client to connect a WG_VPN server in local network. The setup process contents three main steps: Install WireGuard and create a key-pair in WireGuard client. Add the Android client peer information in the WireGuard server’s config file. Config the Android WireGuard client to connect to the server. The test environment network configuration:  Step 1. Install Wire...

   WIREGUARD,VPN,TUTORIAL     2020-10-24 08:46:42

  Baidu may withdraw from NASDAQ

Baidu, the search engine giant in China, may withdraw from NASDAQ some day and then get re-listed on A-shares market in China. This message is conveyed by Robin Li, CEO of Baidu, on a Wednesday(Beijing time) interview. Baidu is now investing heavily on O2O(Online to Offline) service as it is an emerging market where all Internet giants in China are diving in. In addition to its own O2O products, which include delivery service Waimai and deals site Nuomi, it has invested in a number of othe...

   NASDAQ,ROBIN LI,O2O,BAIDU     2015-09-17 04:03:55

  Crazy! 618 million daily active users on Facebook

Facebook released 2012 Q4 financial report. Facebook total revenue in the fourth quarter of 2012 is $1.585 billion, an increase of 40% over the same period last year, about 23% of the total revenue are from mobile advertising. Net profit is $64 million, down 79% over the same period last year.Now Facebook monthly active users reach 10.6 million, daily active users reach 618 million. The daily active users from mobile are more than the daily active users from desktop side the first time.In the e...

   Facebook,Financial report,Mobile     2013-01-31 03:13:06

  ByteBuffer in Java

ByteBuffer is introduced in java.nio since Java 1.4. It provides a way of representing raw structured data such as from a file or from network. It enables fast access of underlying data compared to traditional ways like byte[] Prior to Java 1.4, if you want to represent a structured raw data, you need to create a byte[] and then having a set of checks to delimit the byte array to get the expected tokens. There are three ways to create a ByteBuffer: Wrapping an exiting array by calling ByteBuffe...

   JAVA,BYTEBUFFER,ALLOCATION     2015-07-08 03:17:44

  Go Lacks Ternary Operators. Here Are Some Equivalents

If you were like me, a pure Java developer before writing Go, you must be wondering why Go doesn’t support the ternary operator like return a > 1 ? 0 : 1. Most mainstream languages like C and Java are supportive of ternary operators; languages like Python and Ruby support the simplified if-else one-liner, such as a = 0 if a > 1. However, Go is not among them. And it is not only about adding operators but also a concept of coding in a more convenient way, such as the ?: expression can...

   GOLANG,TERNARY OPERATOR     2022-12-09 19:51:32

  Amazon is tesing in-app purchase service to chanllenge Apple and Google

According to Bloomberg News, Amazon is testing a service that allows Tablet PC users to purchase goods through mobile applications, this shows that Amazon may enter the market led by Google and Apple.According to Maria Ly, co-founder of the fitness club members card vendor Skimble which involves in the test project in the Amazon. Amazon is testing the in-app purchase service which allows users to subscribe to and purchase of goods in the application. Amazon spokesman Kinley Pearsall declin...

   Amazon,in-app purchase service,Apple,Google     2012-04-04 08:18:18

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