• Focusing on Domain not Platform
  
• Fast Prototyping
  
• Size of Product
• Composable, Code Manageability
  

Cons

Success Stories:

Banking, complex algorithms, DSL creations

Success Stories:

Web, Telecom, GSM, Networking,

Messaging, DHT

Haskell 1998 — mostly academic

OCaml 1996 — marginal classic

Scala 2004 — Java replacement

Erlang 1986 — most enterprise-like

Erlang — Dynamically Typed Functional Language

Don't be sad, Look on numbers...

MQ server — cluster heart. On of the most scalable and fast MQ — RabbitMQ — AMQP implementation of messaging protocol developed in JP Morgan.

C/C++:  Redis AP, MongoDB AP

Java:     Oracle Cache Coherence AP,

               Cassandra CA, Hadoop CA

Erlang: Riak AP, CouchDB AP, Hibari AP,

               KAI AP, LeoFS AP, Mnesia CA

Erlang has more DHT implementation

than any other language 

because of its cluster ready infrastructure.