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e2 Overview

e2 is a light weight Erlang library that simplifies the process of writing better software.

Better Software

  • Resilient in the face of unexpected faults
  • Maintainable as it becomes more complex
  • Performs acceptably

e2 Features

  • Applications are built as systems of federated services that act independently of one another
  • Code is short and focused, reflecting the principle of Separation of Concerns
  • Applications can be debugged and fixed while running
  • Applications continue to work, despite bugs and other faults

e2 Benefits

  • Problems are easier to solve because they can be made small, concrete and understandable
  • Software enhancements and fixes can be deployed more often and in smaller units, reducing the overall risk of change
  • Testing costs are lower due to Erlang's language design and fault tolerant architecture

e2 vs. Other Productivity Tools

Software language and tool development tends to focus on two areas:

  • Features that improve developer productivity
  • Increasing program performance

Unfortunately, developer features and faster software often come at the expense of software quality:

  • Language features that hide complexity can also hide important design considerations that affect the way software runs and how it can be maintained
  • Performance optimizations are often made without weighing the impact on other important software characteristics such as simplicity, reliability, and maintainability

e2 reflects Erlang's core design principle: performance and developer productivity are important, but should not come at the expense of software reliability and maintainability.

Enough Talk!

.. toctree::
   :maxdepth: 1

   quick_start
   tutorial
   erlang