Memory Blocks

Memory Blocks

Memory blocks provide persistent key-value storage for maintaining flow-level persistence. They act as a lightweight database for storing temporary data, counters, flags, or information your automation needs to remember across multiple events.

What is the Memory?

Persistent storage system built into Flows that allows you to:

• Store and retrieve key-value pairs
• Set optional time-to-live (TTL) values for automatic cleanup
• Organize data using collections (namespaces)
• Share data between different blocks

Memory Block Types

Memory Set

Stores a value in the memory under a specified key.

Configuration:

• Collection: Static text value acting as namespace for your data
• Key: JavaScript expression evaluating to key name
• Value: JavaScript expression evaluating to value to store
• TTL: Optional JavaScript expression evaluating to seconds before automatic deletion

Special Features: The Value field can reference the old stored value via stored variable. If key doesn’t exist, stored is undefined.

Example Usage:

// Simple Value Storage
{
  "triage": outputs.triage?.object,
  "triage_ts": outputs.startASlackThread.ts,
  "ticket": outputs.prepareTicket,
}

// Simple counter increment
stored ? stored + 1 : 1

// Conditional update - only set if key doesn't exist
!stored ? "initial_value" : stored

// Update with timestamp
{
  value: outputs.someBlock.data,
  lastUpdated: new Date().toISOString(),
  count: stored ? stored.count + 1 : 1
}

Memory Get

Retrieves a value from the memory.

Configuration:

• Collection: Static text value matching collection used in Set operations
• Key: JavaScript expression evaluating to key name

Output:

• Returns stored value if key exists
• Returns undefined if key doesn’t exist

Memory List

Returns keys present in a specified collection.

Configuration:

• Collection: Collection to query from
• Starting Key: Key to start query from
• Limit: Maximum number of items to return

Output:

• Returns paginated array of key names in collection
• Returns empty array if no keys exist in collection