Stop automated workflows from running twice at the same time

The system uses a temporary lock so only one copy of a task runs at once, preventing duplicate work.

How the work actually flows

It repeats. Repeats recheck lock status; it retries when a step fails.

Pattern: Structured Loop (21)

flowchart TD trig>"a task is triggered"]:::trig s0["check for existing lock"]:::task s1["wait if locked"]:::task s2["run the task"]:::task s3["release the lock"]:::task trig --> s0 s0 --> s1 s2 --> s3 lp{"lock becomes free"}:::gate s1 --> lp lp -. "recheck lock status" .-> s0 lp -->|"finished"| s2 out[/"duplicate runs prevented"/]:::out pay{{"avoids duplicate records or charges"}}:::pay s3 --> out out --> pay s2 -. "retries on failure" .-> s2 classDef task fill:#e7f6fe,stroke:#34b8f0,color:#2c2a29 classDef svc fill:#f6f8fa,stroke:#7c8795,color:#2c2a29 classDef mi fill:#e7f6fe,stroke:#0079a8,color:#2c2a29,stroke-width:2px classDef human fill:#fff,stroke:#0079a8,color:#0079a8 classDef store fill:#f6f8fa,stroke:#0079a8,color:#2c2a29 classDef trig fill:#00a4eb,stroke:#0079a8,color:#fff,font-weight:bold classDef trigtime fill:#00a4eb,stroke:#0079a8,color:#fff,font-weight:bold classDef trigdata fill:#8ad4f5,stroke:#0079a8,color:#06314c,font-weight:bold classDef gate fill:#fff,stroke:#e8a23d,color:#6b4708,font-weight:bold classDef out fill:#1f9d6b,stroke:#167a53,color:#fff,font-weight:bold classDef pay fill:#06314c,stroke:#021f33,color:#fff
Starts itA stepRepeat or finishResultPayoff
Build size
Advanced

A larger build with multiple systems, AI reasoning, and custom rules.

Business functions
API & Webhook IntegrationDevOps & IT Operations
Connects
Redis

The problem it solves

When the same automated task gets triggered twice at once, you can end up with duplicate records, doubled charges, or conflicting updates. You don't find out until something looks wrong in your data, and then you have to hunt down what happened.

Who it fits

Operations or technical teams running automated processes that must never run twice at once.

How it works

  1. A task is triggered, such as an update or a sync
  2. The system checks whether that same task is already running
  3. If it's free, the task runs and then releases its lock when finished
  4. If another copy is already running, the new one waits briefly and tries again
  5. If a duplicate request shows up while one is still in progress, it's skipped so nothing runs twice
What you get

Duplicate runs that never collide

Your scheduled processes run cleanly one at a time, with no risk of two copies stepping on each other.

What you get

A safeguard that ensures only one copy of a critical task runs at a time, with duplicates automatically skipped.

What you need

A Redis database, either self-hosted or a managed service, plus whatever trigger starts the task.

We can build this. But should you?

The hard question is not how to build it. It is whether this is the right thing to build first.

That is what a Fractional Chief AI Officer figures out with you, before anyone writes a line of code.

Let's Talk Strategy

Related automations

Run a custom AI chatbot on Telegram with memory and image generation

A Telegram chatbot remembers your conversation, keeps a consistent persona, and can generate images on request.

Advanced

Let an AI assistant discover and run your existing automations

Connects an AI assistant like Claude to your existing automations so it can find and run the right one for a task.

Starter

Turn a story prompt into narrated audio chapters automatically

Takes a story idea and returns a written chapter plus matching audio narration, keeping characters consistent.

Advanced

Run a WhatsApp AI assistant for pet shop bookings and questions

An AI assistant on WhatsApp that books appointments, answers questions, and understands voice and photos.

Advanced
Back to the AI Playbook