2018.2

Table Of Contents
internal engines.
Speed units
The number of 'speed units' is the maximum number of Merge engines or Weaver engines that
are allowed to work in parallel. The output speed of all engines together is limited to a certain
number of output items (web pages, emails, or printed pages) per minute. How many speed
units you have and what the maximum total output speed will be is determined by your licence
and any additional Performance Packs you might have.
There is one important twist: when generating Print output, the limit imposed by the number of
speed units, only applies to the Weaver engines; when creating Emailor Web output, the limit
applies to the Merge engines only (the Weaver engine is not involved). Nevertheless, in
situations where Print and Email or Web output are being created at the same time, all Merge
engines and Weaver engines count towards the maximum number of speed units. (DataMapper
engines are not taken into account.)
Each Merge engine and each Weaver engine needs at least one speed unit. However, since
the number of engines is configurable, and since small, medium and large jobs may run
concurrently, the number of engines in use may not match the number of available speed units.
When there are more speed units than there are engines in use, the Connect server distributes
the speed units and the maximum output speed to the engines proportionally.
The REST API
The Connect server receives REST commands (see The Connect REST API CookBook),
normally either via the Workflow service or from the Designer. This design allows the Connect
functionality to be used by other applications. The server forwards the commands to the
appropriate engine and returns the results to the caller. The results are the id's of the items
(records, content items, job etc.) that are stored in the Connect database (see below). All
Connect tasks except the Create Web Content task integrate the results in the Metadata in
Workflow.
The figure below shows the communication between Connect tasks and the Connect server in
a Print process.
Page 135