What Jtrix doesn't do (and why it doesn't)

These key features are missing from the Jtrix API, and need to be implemented at application level.

In general, the end-to-end argument is the justification for leaving them out; they are difficult to solve at the general API level or more efficiently solved at the application level.

In addition, mechanisms implemented as application level tools can be versioned and substituted independently of the base API, with all versions and implementations able to run concurrently.