Prefect Rollout Playbooks¶

Most Prefect quality adoption happens in stages: ad hoc task, saved block, reusable flow, then deployment. This page turns that pattern into a deliberate rollout playbook.

Who This Is For¶

teams standardizing Prefect-based quality workflows
operators moving from experimentation to production
platform engineers defining rollout steps for new domains

When To Use It¶

Use this page when:

a successful prototype needs to become a shared pattern
the team is moving from ephemeral blocks to saved blocks
production rollout needs a checklist instead of ad hoc promotion

Prerequisites¶

at least one working Prefect quality flow or task
a supported compatibility tuple
a deployment target or work pool strategy

Minimal Quickstart¶

Start with a task-only flow:

from prefect import flow
from truthound_prefect import data_quality_check_task

@flow
async def validate_users(data):
    return await data_quality_check_task(
        data,
        rules=[{"column": "id", "check": "not_null"}],
    )

Promote to a reusable saved block when the configuration should be shared:

from truthound_prefect import DataQualityBlock

block = DataQualityBlock(engine_name="truthound")

Production Pattern¶

Recommended rollout ladder:

ephemeral task-based proof of value
saved DataQualityBlock for shared configuration
create_quality_flow or quality_checked_flow for standard flow composition
deployment into work pools and environment-specific automation

Checklist before promotion:

block configuration is explicit and reproducible
retry and cache policy are documented
result artifacts and notifications are wired
the flow is tested against representative input shapes

Failure Modes and Troubleshooting¶

Symptom	Likely Cause	What To Do
early flows are fast but production ones are confusing	configuration drift between ephemeral and saved paths	standardize on block-backed config before wide rollout
teams fork their own wrappers	reusable flow factories were never formalized	publish one blessed flow pattern
production incidents are hard to triage	artifacts and notifications were added late	wire them before general availability