Documentation Workfront Adobe Workfront Fusion

Fusion performance guardrails

Last update: March 17, 2025

Topics:
Workfront Fusion

Work automation requires rapid processing, so Adobe Workfront Fusion is designed for high performance. Because long-running scenarios can slow down the pace of your work, we’ve designed Workfront Fusion with performance-preserving guardrails that limit execution time, data size, and other scenario parameters. Workfront Fusion designers should be aware of these guardrails and incorporate them into their design practices.

Browsers

Workfront Fusion supports only Chrome based browsers.

Scenarios

The default scenario execution timeout is 40 minutes. When the execution reaches this timeout, Workfront Fusion interrupts scenario execution after the next cycle or operation, depending on the scenario. This forces the scenario to stop shortly after the 40 minute limit is reached
The maximum size of a scenario blueprint is 5 MB, but we recommend keeping scenario size under 3 MB.

App modules that create or update data with large numbers of fields can cause very large blueprints.
- When using the Workfront app, be sure to only select fields needed for your create or update use cases.
- When using other apps, use custom API modules to interact with any record type that has a large number of fields.
While there is no cap for the number of modules in a scenario, scenarios with more than 150 modules negatively impact the performance of your Workfront Fusion system. For this reason, we do not recommend creating scenarios with over 150 modules.

Operations

The default operation timeout is typically 40 seconds.

Files

Fusion’s total processing capacity for files is 1 GB. The limit is based on a total memory cost. Every operation contributes to that cost. If a single file of 400 MB is downloaded and uploaded then the total cost to the file capacity would be 800 MB.
Organizations on the Workfront Ultimate plan have access to increased file processing beyond 1 GB. The Fusion platform can support individual files up to 15GB for a single action (e.g. upload file), but there are other factors that affect data transfer. The file size limit of single action depends on the web service Fusion connects to. Data transfer is the total processing for a single execution. This means multiple actions in a single execution contribute to the total data transfer. Fusion will process files until the execution limit of 40 minutes is reached.

For more information, see Working with large files.

Server Memory Usage

Server memory usage for a single execution is limited to 1 GB.

Many factors, such as large files or complex modules, can affect server memory usage in ways that are difficult to predict or control. Because of this, your scenario execution may exceed the 1 GB memory limit, even if the scenario follows all other performance guardrails. Exceeding the memory limit causes the execution to fail.

Webhooks

The default maximum size of a payload is 5 MB.
Webhooks are limited to 100 requests per second. When this limit is reached, Workfront Fusion sends a 429 (Too Many Requests) status.
Workfront Fusion stores webhook payloads for 30 days. Accessing a webhook payload more than 30 days after it was received results in the error “Failed to read file from storage.”
Webhooks are deactivated automatically if either of the following applies:
- The webhook has not been connected to any scenario for more than 5 days
- The webhook is used only in inactive scenarios, which have been inactive for more than 30 days.
Deactivated webhooks are deleted and unregistered automatically if they are not connected to any scenarios and have been in deactivated status for over 30 days.

Execution history

Execution history logs are limited to a size of 100 MB. If the execution history exceeds this size, only the first 100 MB will be shown.
If a scenario has multiple concurrent executions. only 5 executions display in the Executions area of the scenario details page. This is true even when more than 5 executions are running.

Incomplete executions

Incomplete executions are limited to a total size of 500 MB. If the 500 MB limit is reached, no more incomplete executions will be stored.

Retries

When using the Break module and specifying the Retry directive, if a scenario fails consecutively 10 times within a 2-minute timeframe, the scenario will be automatically deactivated.

Recursion

Recursion occurs when a scenario triggers a new execution of itself, which triggers a new execution, and so on in an infinite loop.

For example, a scenario is triggered when a task is created, and that scenario creates two tasks. The newly created tasks both trigger the scenario again, which create four new tasks. Every time a task is created, the scenario is triggered, and every time the scenario runs, the number of tasks doubles. The number of tasks grows exponentially.

Recursion can cause performance issues for both the organization that owns the recursive scenario, and to other organizations.

Consider the following regarding recursion:

When a scenario is causing recursion, it is deactivated by the Fusion engineering team to prevent further performance issues.
Because recursion is a result of scenario design, you must design your scenarios in a way that ensures that the scenario does not include actions that trigger the scenario.

recommendation-more-help