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SEARCH KEYWORD -- Concurrent connection

  A simple tutorial on GoLang connecting to Clickhouse

Go, also known as Golang, is a statically-typed, concurrent programming language created by Google. ClickHouse is a high-performance, column-oriented database management system that can be used for real-time data analysis. This tutorial will provide a deep dive into how to connect to ClickHouse from a Go program, including how to perform common database operations such as SELECT and INSERT statements. Before proceeding, it is assumed that you already have Go and ClickHouse installed on your mach...

   GOLANG,CLICKHOUSE,TUTORIAL     2023-02-11 07:05:36

  Tips for improving PHP efficiency

0. Using single quote to replace double quote to enclose string literal, this will be a bit faster. Because PHP engine will search variables in double quoted string. 1. If a method in class can be declared as static, then make it static, this will be 4 times faster. 2. $row["id"] is 7 times faster than $row[id] 3. echo is faster than print, and you should use multiple parameters instead of string concatenation, i.e use comma(,) instead of dot(.) to concatenate string. For example echo $str1,$str...

   PHP, efficiency, tips     2012-10-01 19:39:06

  Multithreading interview questions in Java

Multithreading as a widespread programming and execution model allows multiple threads to exist within the context of a single process. These threads share the process' resources but are able to execute independently. The threaded programming model provides developers with a useful abstraction of concurrent execution. However, perhaps the most interesting application of the technology is when it is applied to a single process to enable parallel execution on a multiprocessor system.Many programme...

   Multithreading,Java,Interview     2012-05-28 06:33:25

  How Do I Enable Remote Access To MySQL Database Server?

By default remote access to MySQL database server is disabled for security reasons. However, some time you need to provide remote access to database server from home or a web server. If you want to remotely access to the database server from the web server or home, follow this quick tutorial.MySQL Remote AccessYou need type the following commands which will allow remote connections.Step # 1: Login Using SSH (if server is outside your data center)First, login over ssh to remote MySQL database ser...

   MySQL,Remote access,Enable,Host or webdomain     2011-10-31 00:31:41

  Easy Parallel Processing in PHP

The proliferation of multicore CPUs and the inability of our learned CPU vendors to squeeze many more GHz into their designs means that often the only way to get additional performance is by writing clever parallel software. One problem we were having is that some of our batch processing jobs were taking too long to run. In order to speed the processing, we tried to split the processing file into half, and let a separate PHP process run each job. Given that we were using a dual core serv...

   PHP,Parallel processing,Multithreading like,Sleep     2011-12-12 10:58:59

  Some thoughts about microservice adoption

Nowadays microservice is very popular among companies with the increasing complexity of systems. The goal is to make each microservice to handle one specific job and handle it well. This normally would provide the benefit of maintaining the service easily and isolating errors and making the service more reliable and scalable. The benefits of adopting microservice are obvious. Maintainability. Decouple functions so that each function can be maintained separately which reduces the risk of issue ...

   ADVANTAGE,DISADVANTAGE,MICRO SERVICE     2020-09-05 01:25:05

  IE ActiveX(”htmlfile”) Transport, Part II

In my last post I discussed using the ActiveX(”htmlfile”) technique to provide a usable streaming transport in Internet Explorer. The solution I provided will work, but since writing the last article I’ve made significant progress in understanding why IE behaves the way it does with respect to the streaming transport. The previous solution amounted to creating an array of messages, pushing messages on that array from the htmlfile iframe, and popping messages off of the array i...

   IE,Http,Streaming,htmlfile,Transport,Act     2011-09-05 04:07:02

  Should All Web Traffic Be Encrypted?

The prevalence of free, open WiFi has made it rather easy for a WiFi eavesdropper to steal your identity cookie for the websites you visit while you're connected to that WiFi access point. This is something I talked about in Breaking the Web's Cookie Jar. It's difficult to fix without making major changes to the web's infrastructure. In the year since I wrote that, a number of major websites have "solved" the WiFi eavesdropping problem by either making encrypted HTTPS web traffic an accou...

   Web traffic,Security,HTTPS.Encryption,Wifi     2012-02-24 05:02:58

  In-memory key-value store in C, Go and Python

Subtitle: Wow Go’s net library is fast On paternity leave for my second child, I found myself writing an in-memory hashmap (a poor-man’s memcached), in Go, Python and C. I was wondering how hard it would be to replace memcached, if we wanted to do something unusual with our key-value store. I also wanted to compare the languages, and, well, I get bored easily! The code is on github as Key-Value-Polyglot. Each version implements enough of the get and set commands from the mem...

   key-value,Memory,C,Python,Go     2012-03-21 09:21:51

  Samijyon : A tablet from North Korea

According to Sina Tech, North Korea Tech posted an article about Samijyon. Samijyon is a model of Android  tablet manufactured by North Korea. You can buy it with $200 in North Korea. Smajiyon's hardware configuration is as good as Samsung and Apple, but it doesn't allow WiFi connection and ordinary North Koreans cannot connect to Internet as well, users can only connect to domestic network of North Korea. On this tablet, there are no built-in Google apps such as Gmail and Google Play. But...

   Samijyon,North Korea,Tablet     2013-08-03 22:01:35

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