Workflows Runtime Limitations - Blink Documentation

Workflow Executions

Feature	Description	Limit Value	Notes
Workflow Execution Time	Maximum duration for a workflow to run.	`12 hours` (default: `2 hours`)	Visit the More In-Depth Explanation of Time Limitations section, for a more detailed explanation.
Execution History	Maximum number of entries stored in a workflow’s execution history.	`100`	Contact support if you need to increase the number of history entries.

Steps

Limit Description	Limit Value	Notes
Maximum output size for a step’s output (result)	`20MB`	For larger outputs, save the result to a file using the step configuration.
Maximum number of steps in a workflow	`5000`
Default timeout for a step	`1 minute`	Visit the More In-Depth Explanation of Time Limitations section, for a more detailed explanation.
Maximum number of HTTP Steps per minute	`1200`	Applies to Blink Cloud Runners only.

More In-Depth Explanation of Timeout Limitations

Timeouts can be defined at two levels: Step and Workflow

Actions

Feature	Limit Description	Limit Value	Notes
Global Variables	Maximum size of a Global Variable	`1MB`
Set Variable Flow Control Action	Maximum size for a value in the Set Variable action	`20MB`
Wait Flow Control Action	Maximum timeout duration for the Wait action	`14 Days`	Paused time doesn’t count toward workflow duration. E.g., a 4-hour workflow with a 1-hour pause takes 3 hours to execute.
Interactive Actions	Maximum timeout for Interactive Actions	`14 Days`	Paused time doesn’t count toward workflow duration. Visit the Exceptions- Interactive Actions and the Wait Action under More In-Depth Explanation of Timeout Limitations section, for a more detailed breakdown.
Wait For Web Form Response Action	Maximum timeout for Web Form Response action	`14 Days`	Paused time doesn’t count toward workflow duration. Visit the Exceptions- Interactive Actions and the Wait Action under More In-Depth Explanation of Timeout Limitations, for a more detailed breakdown.
Synchronous Subflows	Timeout for Synchronous Subflows	Limited by parent workflow timeout	A synchronous subflow must finish within the parent workflow’s timeout (e.g., 10 min for a 10-minute parent workflow).
Webhooks	Maximum number of executions per minute	`1800`
Polling Interval	Minimum time between each poll	`1 min`
Scheduled Triggers	Minimum time frequency for scheduled workflows	`1 min`	Default is set to `5 min`

Files

Limit Description	Limit Value	Notes
Maximum file size for a single step	`500MB`	Does not apply if using your own Object Storage.
Maximum total file size across all steps in a workflow	`1500MB`	Does not apply if using your own Object Storage.
Maximum number of files that can be created in one workflow execution	`100`

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