Elian  Harber

Elian Harber

1617378180

Using Serial Confinement Discipline to Achieve Thread Safety in Golang

We avoid date races on mutable data by keeping it confined to a single thread at a time. By doing this, we prevent other threads from reading or writing the data directly. One way of achieving this is, using “confinement” strategy.

It is a common practise to share a variable/field between goroutines in a pipeline by passing its memory address from one stage to the next over a channel. If each stage of the pipeline refrains from accessing the variable/field after sending it to the next stage, then all accesses to the variable/field are sequential. As a result, the variable/field is confined to one stage of the pipeline then confined to the next and next so on. This is called  serial confinement. Since other goroutines cannot access the variable/field directly, they must use a channel to send the confining goroutine a request to manipulate the variable/field which is what meant by “Do not communicate by sharing memory; instead, share memory by communicating” in Golang.

  • Don’t communicate by sharing memory - Assume that there are multiple threads that want to read/write a shared variable. For example they would use mutexes to lock memory in order to prevent others from reading/writing on it until the operation is done. Here they lock memory one at a time then unlock it as soon as they are done with it so that the next one can pick it up.

#go #golang

What is GEEK

Buddha Community

Using Serial Confinement Discipline to Achieve Thread Safety in Golang
Elian  Harber

Elian Harber

1617378180

Using Serial Confinement Discipline to Achieve Thread Safety in Golang

We avoid date races on mutable data by keeping it confined to a single thread at a time. By doing this, we prevent other threads from reading or writing the data directly. One way of achieving this is, using “confinement” strategy.

It is a common practise to share a variable/field between goroutines in a pipeline by passing its memory address from one stage to the next over a channel. If each stage of the pipeline refrains from accessing the variable/field after sending it to the next stage, then all accesses to the variable/field are sequential. As a result, the variable/field is confined to one stage of the pipeline then confined to the next and next so on. This is called  serial confinement. Since other goroutines cannot access the variable/field directly, they must use a channel to send the confining goroutine a request to manipulate the variable/field which is what meant by “Do not communicate by sharing memory; instead, share memory by communicating” in Golang.

  • Don’t communicate by sharing memory - Assume that there are multiple threads that want to read/write a shared variable. For example they would use mutexes to lock memory in order to prevent others from reading/writing on it until the operation is done. Here they lock memory one at a time then unlock it as soon as they are done with it so that the next one can pick it up.

#go #golang

Why Use WordPress? What Can You Do With WordPress?

Can you use WordPress for anything other than blogging? To your surprise, yes. WordPress is more than just a blogging tool, and it has helped thousands of websites and web applications to thrive. The use of WordPress powers around 40% of online projects, and today in our blog, we would visit some amazing uses of WordPress other than blogging.
What Is The Use Of WordPress?

WordPress is the most popular website platform in the world. It is the first choice of businesses that want to set a feature-rich and dynamic Content Management System. So, if you ask what WordPress is used for, the answer is – everything. It is a super-flexible, feature-rich and secure platform that offers everything to build unique websites and applications. Let’s start knowing them:

1. Multiple Websites Under A Single Installation
WordPress Multisite allows you to develop multiple sites from a single WordPress installation. You can download WordPress and start building websites you want to launch under a single server. Literally speaking, you can handle hundreds of sites from one single dashboard, which now needs applause.
It is a highly efficient platform that allows you to easily run several websites under the same login credentials. One of the best things about WordPress is the themes it has to offer. You can simply download them and plugin for various sites and save space on sites without losing their speed.

2. WordPress Social Network
WordPress can be used for high-end projects such as Social Media Network. If you don’t have the money and patience to hire a coder and invest months in building a feature-rich social media site, go for WordPress. It is one of the most amazing uses of WordPress. Its stunning CMS is unbeatable. And you can build sites as good as Facebook or Reddit etc. It can just make the process a lot easier.
To set up a social media network, you would have to download a WordPress Plugin called BuddyPress. It would allow you to connect a community page with ease and would provide all the necessary features of a community or social media. It has direct messaging, activity stream, user groups, extended profiles, and so much more. You just have to download and configure it.
If BuddyPress doesn’t meet all your needs, don’t give up on your dreams. You can try out WP Symposium or PeepSo. There are also several themes you can use to build a social network.

3. Create A Forum For Your Brand’s Community
Communities are very important for your business. They help you stay in constant connection with your users and consumers. And allow you to turn them into a loyal customer base. Meanwhile, there are many good technologies that can be used for building a community page – the good old WordPress is still the best.
It is the best community development technology. If you want to build your online community, you need to consider all the amazing features you get with WordPress. Plugins such as BB Press is an open-source, template-driven PHP/ MySQL forum software. It is very simple and doesn’t hamper the experience of the website.
Other tools such as wpFoRo and Asgaros Forum are equally good for creating a community blog. They are lightweight tools that are easy to manage and integrate with your WordPress site easily. However, there is only one tiny problem; you need to have some technical knowledge to build a WordPress Community blog page.

4. Shortcodes
Since we gave you a problem in the previous section, we would also give you a perfect solution for it. You might not know to code, but you have shortcodes. Shortcodes help you execute functions without having to code. It is an easy way to build an amazing website, add new features, customize plugins easily. They are short lines of code, and rather than memorizing multiple lines; you can have zero technical knowledge and start building a feature-rich website or application.
There are also plugins like Shortcoder, Shortcodes Ultimate, and the Basics available on WordPress that can be used, and you would not even have to remember the shortcodes.

5. Build Online Stores
If you still think about why to use WordPress, use it to build an online store. You can start selling your goods online and start selling. It is an affordable technology that helps you build a feature-rich eCommerce store with WordPress.
WooCommerce is an extension of WordPress and is one of the most used eCommerce solutions. WooCommerce holds a 28% share of the global market and is one of the best ways to set up an online store. It allows you to build user-friendly and professional online stores and has thousands of free and paid extensions. Moreover as an open-source platform, and you don’t have to pay for the license.
Apart from WooCommerce, there are Easy Digital Downloads, iThemes Exchange, Shopify eCommerce plugin, and so much more available.

6. Security Features
WordPress takes security very seriously. It offers tons of external solutions that help you in safeguarding your WordPress site. While there is no way to ensure 100% security, it provides regular updates with security patches and provides several plugins to help with backups, two-factor authorization, and more.
By choosing hosting providers like WP Engine, you can improve the security of the website. It helps in threat detection, manage patching and updates, and internal security audits for the customers, and so much more.

Read More

#use of wordpress #use wordpress for business website #use wordpress for website #what is use of wordpress #why use wordpress #why use wordpress to build a website

Frank Xu

1625038259

Thread Gauge Calibration - What Should You Know?

If you are using thread gauges or thread ring gauges you would have already heard about calibration. If you do not pay attention to thread gauge calibration then the integrity of the thread gauges you are purchasing and using could be compromised. In case you do not know what is thread gauge calibration and what is its significance then here are a few important factors that you should know about calibration.

When you order a custom trapezoidal thread gauge or a custom Whitworth thread gauge or for that matter any thread gauge, how will you know that it is exactly matching your requirements and specifications? As you know the thread gauges are inspection tools and unless they are 100% accurate there is no use having a thread gauge. When you calibrate the thread gauge you will know whether or not the tool is true to its specifications and whether it matches the required specifications 100%.

It is important to get calibration certificate along with your thread gauge when ever you are purchasing your thread gauge. All the manufacturers will arrange for a third party calibration certificate if you inform them early enough while placing your order. This may have an additional cost but you cannot avoid this cost because without having the confirmation that your thread gauge is delivered as per your requirements, you cannot confidently check the components that need to be inspected with your thread gauges. If there is any issue with the thread gauge you will think that there is something wrong with the threaded components. As a result, you would keep rejecting those components when the actual issue is with the thread gauge you are using. All such issues and mistakes could be avoided or minimized when you go for a calibration certificate when you are buying your thread gauges.

You may need to go for recalibration every time you repair your thread gauge or make any modifications to it. In case you are experiencing sudden episode of issues with your threaded components then it is best to first check the thread gauges you are using to ensure that the problem is not with the thread gauge.

It is also important to get a calibration certificate for your thread gauge if the tool has been dropped or if someone that is not trained properly use the thread gauge and exerts undue force. In other words, whenever you suspect that the thread gauge could have been damaged then it is vital go check the thread gauge and calibrate it so that you can be sure of the accuracy of the thread gauge.

Always source all your thread gauges from the most trusted companies. Whenever you are calibrating your thread gauge get it done from a reputed calibration center. You cannot afford to have a faulty thread gauge as it is an inspection tool, a standard that is used to measure the accuracy of the other tools. Therefore, make sure that your thread gauges are always well maintained and regularly calibrated.

#trapezoidal thread gauge #thread gauges #thread ring gauges #thread plug gauges #metric thread gauges #unef thread gages

Kole  Haag

Kole Haag

1602838800

Why I Feel Go Threading Is Better, Though With Some Limitations

Kernel Scheduling Entity

Before jumping into the threading model. Let’s understand the kernel scheduling entity. For any kernel, the scheduling entity could be a process or thread. Some kernels are not multi-threaded, the scheduling entity will be processed. Most of the recent kernels are multi-threaded. This helped in general for someone implementing threading in userspace vs depending on kernel threading.

Different Thread Models

There are three different threading models we can see Mx1, 1x1, MxN

Image for post

Different Threading Models

Mx1 — There are two different possible operating systems, where scheduling entity for kernel is a process or a thread. Either case one would have implemented Mx1 threading model in userspace.

In this implementation, kernel is not aware of any of the user threads. a scheduled user thread maps to kernel thread/process based on the scheduling entity in kernel. So there is only one thread/process in kernel which is serving the user-space scheduler.

The main advantage of this mechanism is that it will not create much load on the kernel.

The main disadvantage with this approach is and depends on the way userspace scheduler is implemented, if a thread within the process blocks since the underlying kernel scheduling entity does not know about other user threads, it will block the entire process. So, even there are some schedulable threads in user space, it cannot schedule them.

Some implementations take care of it by creating another thread and schedule runnable user-space threads. But most of the implementations do not do this.

1x1 — In this mechanism, there is one to one mapping for the user-space threads to kernel threads. POSIX threads implemented in Linux use 1x1 model.

The main advantage of this mechanism is userspace scheduler is simplified since it completely depends on kernel scheduling.

The main disadvantage is that it generates too much load on the kernel. A process could have thousands of threads and causes kernel to create that many threads.

#golang #go #threads #golang-tutorial #threading

Hire Dedicated Golang Developers | Golang Web Development Company

Does your business need a robust system across large-scale network servers then developing your app with a Golang programming language is the way to go. Golang is generally used for the development of highly secured, High Speed and High Modularity apps such as a FinTech Industry.

Want to develop a Highly secured app for your business?

Then hire a dedicated Golang developer from WebClues Infotech that are highly skilled in carrying out the work in a timely and qualitative output. With WebClues Infotech you get the assurance that we know what are the customers’ expectations and how to deliver on them on time.

Get your desired Golang Developer based on your project requirement!!

Share your requirements here https://www.webcluesinfotech.com/contact-us/

Book Free Interview with Golang developer: https://bit.ly/3dDShFg

#hire golang developer #hire go language developer #dedicated golang app developers #golang web development company #hire golang developers india #hire expert golang developers