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Apache Airflow Implementation · Derry

Apache Airflow Implementation in Derry

Implementing Airflow for Derry organisations, where treating it as a scheduler with a web interface leads directly to the first surprise. Pipelines have a notion of the period they are processing, and deploying one with a start date in the past can trigger a great many historical runs at once — which is a feature and rarely what anybody intended.

Why this comes up

The problem

A new pipeline was deployed with a start date last year, and it immediately began executing hundreds of backfill runs.

What you get

What we deliver

  • Catchup behaviour set explicitly per pipeline rather than left at the default
  • Tasks written to be idempotent, since reruns are normal rather than exceptional
  • Pipelines parameterised by the period they process, not by the current date
  • Concurrency limits set so one heavy pipeline cannot exhaust the workers
  • Failure alerting configured to reach a person rather than sitting in the interface
  • Dependencies expressed in the pipeline rather than in scheduled start times

Want this scoped for your business in Derry?

Thirty minutes, no charge, no sales script. You leave with a written summary of what apache airflow implementation would actually involve — whether or not you use us.

Book a 30-minute call

Working in Derry

Northern Ireland

The city is Derry to most of its population and Londonderry in official use, and which name you lead with is read as a statement here — we use Derry in customer-facing copy and note both where a document has to be formal.

Cross-border trading systems for businesses working into Donegal, and manufacturing tooling for the north west.

Sectors we work with in Derry

  • Manufacturing
  • Healthcare
  • Higher Education
  • Digital
  • Tourism

What we work with

Technologies and platforms

  • Apache Airflow
  • Python
  • PostgreSQL
  • Kubernetes

Who we work with

Industries we serve

  • Retail
  • Financial services
  • Media companies
  • Technology companies
  • Manufacturing

Why us

Why Derry businesses choose Asionis

  • Projects typically launched within 4–8 weeks
  • No long-term contracts required
  • All team members UK-based
  • Dedicated account manager and development team
  • Transparent reporting with monthly performance metrics
  • Scalable from startup to enterprise

How we work

  1. Step 1

    Free consultation

    A 30-minute call to understand the problem. You keep the written summary either way.

  2. Step 2

    Proposal

    Scope, timeline and a fixed price, in writing, before anything starts.

  3. Step 3

    Build

    Short cycles with regular check-ins, so you see progress rather than hear about it.

  4. Step 4

    Launch and support

    We handle the go-live and stay available afterwards.

Apache Airflow Implementation in Derry — common questions

What is catchup and why does it surprise people?
It runs every interval between the start date and now. That is exactly right for a pipeline meant to process history and alarming when someone sets a start date casually — it should be a deliberate setting rather than something discovered on deployment.
Why does idempotency matter so much?
Because tasks get rerun — after failures, during backfills, when someone clears a run. A task that appends rather than replaces produces duplicated data on the second run, and that duplication is frequently found much later in a figure that looks slightly high.
Should tasks use today's date?
No — they should use the interval being processed. A task querying for today works correctly on the day and produces wrong results in every backfill, which makes historical reruns unusable exactly when you need them most.
How should dependencies be handled?
In the pipeline definition rather than by scheduling one job an hour after another. Time-based sequencing works until something runs long, at which point the second job processes incomplete data — and the failure is silent because both jobs succeeded.
Do you work with businesses across County Londonderry?
Yes. We are based in Leicester, United Kingdom and work with clients throughout Northern Ireland, including Derry and the surrounding County Londonderry area. Most collaboration happens remotely, and we travel for kick-offs and key milestones.
What kind of Derry businesses do you usually work with?
Cross-border trading systems for businesses working into Donegal, and manufacturing tooling for the north west. Beyond that we work across Manufacturing, Healthcare, Higher Education, Digital and Tourism.
Do you cover the areas around Derry?
Yes — we work throughout Northern Ireland, including Belfast, Lisburn. Derry is an urban area of roughly 85,000+, and we take on work across the wider County Londonderry region rather than the city boundary alone.

Talk to us about Apache Airflow Implementation in Derry

A 30-minute call with someone who would actually work on it. No sales script, no obligation.

  • Projects typically launched within 4–8 weeks
  • No long-term contracts required
  • All team members UK-based
  • Dedicated account manager and development team
  • Transparent reporting with monthly performance metrics
  • Scalable from startup to enterprise

Or reach us directly

07707 771599admin@asionis.com

Leicester, United Kingdom