feat(Redis Node): Add list length (LLEN) operation

[idirouhab]

Summary

This PR adds a new List Length (LLEN) operation to the Redis node, allowing users to retrieve the length of a Redis list directly from n8n workflows.

• New "List Length" operation in the Redis node operations dropdown
• Parameter field to specify the Redis list name
• Execution logic that calls Redis LLEN command
• Comprehensive test coverage (3 test cases covering success and error scenarios)

How to test:

1. Add a Redis node to a workflow
2. Select "List Length" from the operations dropdown
3. Enter a list name (e.g., bull:main:q)
4. Execute the node
5. Verify the output contains the list length: { "bull:main:q": 42 }

Example use case:

Monitor queue sizes in Bull/BullMQ workflows by checking Redis list lengths (e.g., LLEN bull:main:q).

Related Linear tickets, Github issues, and Community forum posts

Review / Merge checklist

• PR title and summary are descriptive. (conventions)
• Docs updated or follow-up ticket created.
• Tests included.
• PR Labeled with release/backport (if the PR is an urgent fix that needs to be backported)

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.

📢 Thoughts on this report? Let us know!

[cubic-dev-ai]

1 issue found across 2 files

Prompt for AI agents (all 1 issues)

Understand the root cause of the following 1 issues and fix them.


<file name="packages/nodes-base/nodes/Redis/Redis.node.ts">

<violation number="1" location="packages/nodes-base/nodes/Redis/Redis.node.ts:614">
The new LLEN branch returns a fresh object without preserving `pairedItem`, so the output item is no longer linked to its input and breaks downstream item pairing. Please include the paired reference when pushing the result.</violation>
</file>

_{React with 👍 or 👎 to teach cubic. Mention @cubic-dev-ai to give feedback, ask questions, or re-run the review.}

[mike12345567]

LGTM!

[currents-bot]

❌

E2E Tests: n8n tests failed after 8m 37.8s

🟢 583 · 🔴 1 · ⚪️ 12 · 🟣 2

View Run Details

Run Details

• Project: n8n

• Groups: 2

• Framework: Playwright

• Run Status: Failed

• Commit: cb8d886

• Spec files: 96

• Overall tests: 596

• Duration: 8m 37.8s

• Parallelization: 8

Failed Spec Files

Spec File	Failures
tests/ui/inject-previous-execution.spec.ts	1

Groups

GroupId	Results	Spec Files Progress
ui	🟢 528 · 🔴 1 · ⚪️ 12 · 🟣 2	89 / 89
ui:isolated	🟢 55 · 🔴 0 · ⚪️ 0	7 / 7

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