Welcome
Projects
A project is a container for HCL Link artifacts.
Flows
This documentation describes how Flows can be run from REST API, listeners, or they can be scheduled.
Flow Load Balancing
How to balance resources by controlling how many flows can run at the same time

Introduction
Congratulations on your selection of HCL Link as your data integration solution!
What's New
Release Notes
System requirements
A complete desciption of the hardware and software requirements for both Windows and Linux systems.
Installation
Everything you need to know to install HCL Link.
Administration
Here you will find the tasks that are required for administration of your HCL Link product.
Projects
A project is a container for HCL Link artifacts.
- Flows
  This documentation describes how Flows can be run from REST API, listeners, or they can be scheduled.
  - Nodes
  - Terminals
  - Flow terminals
    Flow terminals represent the inputs and outputs to a flow. Every node has input and/or ouptut terminals.
  - Scheduled flows
    This documentation describes the options for defining the flow schedule.
  - Listener
    A Flow that has a Map node as its first node, and uses a File adapter for an input, can enable that node's input to be a Watch.
  - Flow audits
    Flow audits are a way to retrieve more verbose information about a flow instance.
  - Flow Load Balancing
    - How to balance resources by controlling how many flows can run at the same time
  - Flow variables
    Flow Variables are process data variables that go along with the flow execution, accessible to all nodes in the flow while it is being executed under flow executor/engine context.
  - Create a flow
    Steps required to create a flow.
  - Running flows in the Designer
    When you develop a flow in the Flow Designer you can run the flow directly from the Designer either in Link, or on a different runtime environment.
- Maps
  Maps define input and output specifications and mapping rules for data transformation.
- Schemas
  Use the schema designer to define, modify, and view schemas. A schema describes the syntax, structure, and semantics of your data.
- Connections and Actions
  This documentation describes connections and actions.
- Files
  Files are used in various places within HCL Link. HCL Link allows files to be uploaded to the HCL Linkserver.
Services
Service definitions define REST services and the endpoints of a service. This guide provides step-by-step instructions for creating, importing, and managing services using the system interface, following Microsoft standards.
Connectors
This documentation describes the connectors and how they are used.
Packages
Servers
This documentation contains a description of the server groups and servers.
Variables
The variables described here include Configuration variables, flow variables, and cache variables.
Dashboards
A description of HCL Link dashboards, including the Server dashboard and the Kibana dashboard.
Runtimes
Descriptions of Link runtime services.
Resource Adapters
About the HCL Link Resource Adapters, and how to use them.
Cloud Native Link
Cloud Native Link refers to the HCL Link product installation on a Kubernetes cluster.
Reference
This documentation provides HCL Link reference information.
Notices

How to balance resources by controlling how many flows can run at the same time

You can balance resources by controlling the number of flows that can run concurrently through two approaches:

Globally: This can be controlled using the following config.yaml parameter:
```
/runtime/resources/flowThreads
```
This parameter defines the maximum number of flows that can execute concurrently on a single flow executor process.
Per Flow: Each flow included in a package has a setting to control how many instances of that specific flow can be executed at the same time via the provided endpoint.
To configure this, set the Max Instances property for each flow in the list of flows assigned to the package.
The default value is 0, which means no limit is set.