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WHAT is Erlang?

www.erlang-solutions.com

The WHAT, WHEN, WHEREand WHY of using Erlangin your applications

WHAT is Erlang?

Database engines Web-frameworks Messaging buses

Numerous Telecom

Protocols - Diameter & SIP

Web servers

Gaming servers

Instant messaging engines

Messaging gateways

You should think about Erlang when you need

applications that:

Handle a very large number of concurrent

activities

Are easily distributable over a network of

computers

Are fault-tolerant to both software & hardware

errors

Scale with the number of machines on the

network

Are upgradable and reconfigurable without

having to stop and restart

Are responsive within set timeframes

Stay in continuous operation for many years

Erlang was invented to solve requirements of massive concurrency, distribution, soft real-time and high availability in

telecoms, but due to its unique features, quickly made its way into a range of other verticals with similar requirements fromfinancial switches, through instant messaging servers, HTTP servers and web frameworks, database engines and so forth.

Because of its characteristics, Erlang is usually employed as a server-side language, to build high performance scalable and

distributed servers, databases, messaging platforms or web services.

Erlang has a middleware called OTP delivered with the core language, as well as a vast universe of external libraries and

packages for many different purposes. Through various protocol stacks, testing and logging frameworks, Erlang covers most

of the needs imposed by current business demands.

Erlang is a programming language designed specifically for

writing scalable, fault-tolerant, distributed, non-stop, soft

real-time applications. Released as open source by Ericsson in

1998, it has seen a steady adoption in both large-scale

industrial software development and in small agile teams in

startups. It is used for highly available systems, provides

uptime of five nines, upgrades included at a fraction of the effort

of the conventional languages such as C++ and Java. It is

designed for massive concurrency and its design makes it an

ideal candidate for scalability on multicore architectures.

WHEN to use Erlang ?

WHERE is Erlang used?

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Finally, WHY choose Erlang ?

www.erlang-solutions.com

Allows writing your program on one computer, then scaling it tocluster of computers with little or no effort

Built in Distribution based on TCP/IP

Facilitates & accelerates development, speeds up deployment andmaintenance of your products

OTP- Middleware used for developing Erlang

Support for Concurrency

Allows handling millions of processes running in parallel withoutperformance degradation

Supports hot code swapping

Allows software upgrades and patches to be deployed with nosystem downtime

Supports symmetric multiprocessing

Enabling it to scale on todays and tomorrows multi-corecomputers

Erlang delivers working solutions in a short time to market. Erlang

allows you to build software applications faster, on smaller

budgets and with smaller teams, with reduced total life costs. This

is possible because of Erlangs core strengths:

Free & Open Source- Erlang is distributed under a permissive open-source license, and is free to use for anyopen-source, freeware, or commercial projects.

Cross-platform- Erlang runs on Linux, FreeBSD, Windows, Solaris, Mac OS X, and even embedded platforms

such as VxWorks.

Erlangs mature support for multi-threading and parallel processing makes utilization of multi-core hardware

always optimal.

Easy to pick up-Erlangs simple and concise syntax makes it very easy to learn. Erlang is well suited for rapid

prototyping of distributed systems, which is usually a very hard, time consuming and error prone task.

Usually, the same logic can be expressed in Erlang in fewer lines of code compared to other languages.

This makes iterative and agile development faster.The resulting code base is easier to debug and support.

but theres more!

Founded in 1999 soon after Erlang

was released as open source.

Only company of its kind totallyfocused on Erlang and Erlang

community.

With over 300 clients.

Headquartered in London, U.K.

Offices in Stockholm, Krakow,

Copenhagen, Aarhus, Amsterdam

Budapest and Zurich.

Profile

Testimonials

Basho's customers rely on us to deliver

reliable, predictable software.Erlang gives us

the best "batteries included" for that purposeand helps us develop and test our software

faster and better than we could otherwise.

- Justin Sheehy, CTO, Basho

Erlang has helped us scale our business at an

incredible speed, while still providing unparal-

leled availability of our systems. Our traffic,

data, revenue, and staff has doubled every ten

to twelve month for seven years in a row now.

We strongly believe that Erlang has been a key

factor in our success.

-Erik Stenman, Chief Scientist, Klarna