Programming WCF Services, 2nd Edition

General Design Guidelines

1. All services must adhere to these principles:

   1. Services are secure.

   2. Service operations leave the system in a consistent state.

   3. Services are thread-safe and can be accessed by concurrent clients.

   4. Services are reliable.

   5. Services are robust.

2. Services can optionally adhere to these principles:

   1. Services are interoperable.

   2. Services are scale-invariant.

   3. Services are available.

   4. Services are responsive.

   5. Services are disciplined and do not block their clients for long.