Erlang has built-in support for concurrency, distribution and fault tolerance. Erlang is used in several large telecommunication systems from Ericsson. Erlang is available as open source from

Is Erlang still used?

While a few startups use Erlang, most of the companies who use it in their tech stacks are established enterprises. This suggests that while Erlang is still being used, startups aren’t excited about it. One reason Erlang may be declining is because of newer functional programming languages, such as Elixir or Elm.

Is Erlang difficult?

TL;DR Not really more difficult than any other language. It has its unique features and challenges. The most important thing is learning to think concurrently. It’s fun — do it (or learn Elixir instead)!

Is WhatsApp still written in Erlang?

In using Erlang, WhatsApp is part of a larger push towards programming languages that are designed for concurrency, where many processes run at the same time. … In essence, WhatsApp is a replacement for telecoms’ texting services. Like Haskell, Erlang is a product of the ’80s.

Is Erlang better than Java?

I was impressed by the Erlang memory model. It just strikes me as a lot more scalable than Java’s single heap model. The language semantics and the memory model match beautifully. For instance; the simple fact that heaps are private to a thread relieves the threads of all forms of lock checking on their own data.

Should I use Erlang or elixir?

You have a highly experienced development team: You should choose Elixir. It offers greater freedom than Erlang, and experienced developers can utilize it to build powerful applications quicker. Since Elixir offers better documentation, programmers can find more help when they use powerful features.

Does Amazon use Erlang?

Amazon uses Erlang to implement SimpleDB, providing database services as a part of the Amazon Elastic Compute Cloud (EC2). Yahoo! uses it in its social bookmarking service, Delicious, which has more than 5 million users and 150 million bookmarked URLs.

Who owns Erlang?

Designed byJoe Armstrong Robert Virding Mike WilliamsDeveloperEricssonFirst appeared1986Stable release24.1.6 / 18 November 2021Major implementations

Why you should learn Erlang?

Why should you use Erlang in your project? Erlang has three significant advantages over other programming languages, which mainly stem from the unique way the language is built. Concurrency. … Because of that and language’s functional nature, it is less hard to write concurrent programs in Erlang.

Is Erlang fast?

Usually it is very fast, but this choice can in certain situations hurt throughput. The primary reason that Erlang is targeting a JITed VM right now is that it will make it possible to write more of the Erlang VM in Erlang itself, rather than C. … In my experience, larger systems run extremely fast in Erlang.

Article first time published on

Why is Erlang good for concurrency?

One of the main reasons for using Erlang instead of other functional languages is Erlang’s ability to handle concurrency and distributed programming. … It is easy to create parallel threads of execution in an Erlang program and to allow these threads to communicate with each other.

Should I learn Haskell or Erlang?

Haskell has more concise syntax, better suited for traditional programming competitions, whereas Erlang is successful, but its syntax is not easy to get on with. Haskell does not have brilliance when it comes to concurrency, whereas Erlang is suitable for the concurrency-based system.

What language is WhatsApp coded in?

WhatsApp, which has billions of messages sent over its platform every day, has been built with the FreeBSD operating system and the Erlang programming language — two “great tools” in the eyes of Acton.

What was WhatsApp coded in?

WhatsApp is based on Erlang, a programming language designed for scalable systems with real-time high availability requirements. From the beginning of WhatsApp, Erlang seemed like the perfect fit.

Does WhatsApp use elixir?

WhatsApp. … WhatsApp provides messaging services to more than 1 billion people around the world, and they do all this having a really small team. With only 50 engineers, they handled around 900 million users back in 2015. They wrote their application fully in Erlang, which is compiled to same bytecode that Elixir is.

Does Erlang run on JVM?

It is no surprise that floating point operations on Erjang, the version of Erlang running on the JVM, was 5000% faster than the BEAM.

What is the beam and how is it different from the JVM?

The BEAM has an instruction for decrementing the “reduction counter” for the process and deciding whether it is time to yield to let another process run. JVM on the other hand has synchronization instructions for threads. One important difference is that BEAM has tail call instructions, which JVM lacks.

Why is Erlang so reliable?

So here’s a recap of what the Erlang VM gives us in pursuit of reliability: Lightweight, shared-nothing processes that communicate via asynchronous messages. A built-in mechanism for processes to react to failures in other processes.

Which apps use Erlang?

• WhatsApp. How do you support 450 million users with only 32 engineers? …
• AdRoll. AdRoll use Erlang within the live monitoring of their real-time bidding system. …
• Bet365. …
• Pinterest. …
• IBM Cloudant. …
• Goldman Sachs. …
• Moz. …
• Lonely Planet.

Does Ericsson still use Erlang?

Ericsson uses Erlang to develop many of its products and an estimated 40 percent of all mobile traffic worldwide is carried over the company’s network solutions. … Erlang is suitable for any application that requires a robust server solution and it is portable for most operating systems and processor architectures.

What is Erlang in call center?

Erlang C is a traffic modeling formula used in call center scheduling to calculate delays or predict waiting times for callers. Erlang C bases its formula on three factors: the number of reps providing service; the number of callers waiting; and the average amount of time it takes to serve each caller.

Is Elixir same as Erlang?

Elixir and Erlang are two different programming languages that the developers use as per the business requirements. Elixir is developed above Erlang, which is also compatible with Erlang, and some of the features and working are similar to that of the Erlang programming language.

Should I learn Erlang before elixir?

You can definitely start with elixir, there is no need to know erlang before you learn elixir.

How much time does it take to learn Erlang?

According to number of reports one can learn Erlang and start writing reasonably good code in two weeks. But Erlang development is much more than that.

What programming language does Facebook use?

Facebook uses several different languages for its different services. PHP is used for the front-end, Erlang is used for Chat, Java and C++ are also used in several places (and perhaps other languages as well).

What is the Erlang VM?

The Erlang VM runs as one OS process. By default it runs one OS thread per core to achieve maximum utilisation of the machine. The number of threads and on which cores they run can be set when the VM is started.

What Erlang is used for?

Erlang is a programming language used to build massively scalable soft real-time systems with requirements on high availability. Some of its uses are in telecoms, banking, e-commerce, computer telephony and instant messaging.

What is Erlang emulator?

Erlang programs are executed when you instruct the Erlang Runtime System (ERTS) to execute your code. They do not run as binary programs, which can be executed directly by your computer. … The Erlang evaluator is often referred to as an emulator and is very similar to the Java virtual machine.

Is Erlang written in C?

Erlang VM BEAM and HiPE is written mostly in C.

Is go faster than Erlang?

For high performance, Go is preferred over Erlang. Go is fast and efficient than Erlang in terms of its syntax and is used for many advanced services. … For fault tolerance, Erlang is preferred over Go. Go as a programming language is statically typed, while Erlang as a programming language is dynamically typed.

What language is Erlang similar to?

Elixir, Haskell, Go, Clojure, and Akka are the most popular alternatives and competitors to Erlang.