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7207001790 info@cartzuno.net Fixed scope and fixed fee on every service, GST included

Infrastructure & Delivery

Blue-Green Release Setup

Replace one-server deployments with blue-green delivery, health probes and automatic rollback that kicks in when a new version misbehaves in production.

  • 14 working days
  • Scope published below
  • GST included
  • Ref. CZ-CL-105

Overview

If your team still waits for a quiet weekend night to release, this service ends that routine. Every new version starts up, passes its health probes, and receives traffic only after that, and the outgoing version is kept running for an instant switch back. Schema changes use an expand-and-contract method, allowing both code versions to operate together while a release is in progress. We rehearse everything in staging, including a release we break on purpose.

What you receive

  1. Blue-green or rolling deployments on your managed containers or virtual machines
  2. Endpoints for health probes, tuned to how your application actually starts up
  3. Load balancer target groups and connection draining configured
  4. Expand-and-contract schema method written up, then put into practice during one real release
  5. Automatic rollback when health checks fail within a defined window
  6. Release runbook covering the manual override procedure
  7. A failure drill rehearsed together with your engineers

How it runs

  1. Step - 01

    Assess

    We map current deployment steps, causes of downtime and database dependencies.

  2. Step - 02

    Prepare

    Health checks, migration patterns and infrastructure changes are put in place.

  3. Step - 03

    Rehearse

    We release to staging, then deliberately break one to confirm rollback behaves correctly.

  4. Step - 04

    Cut over

    The first production release is carried out jointly with your team.

Timeline: 14 working days, counted from the day we receive what we need from you.

Is it a fit?

A good match for

  • Products with users across multiple time zones
  • Teams tired of late-night deployment sessions
  • Businesses with uptime commitments written into customer contracts

What we need from you

  • Access to your application repository and deployment environment
  • Part-time help from a developer familiar with your database schema
  • A staging environment reasonably close to production

Why it helps

  • Your team releases during the working day, with people around to watch
  • Bad versions get rolled back within minutes, no database restore required
  • Shipping code turns into a normal daily task, not a scheduled occasion

Questions

Not at all. Expand-and-contract migrations are designed so that systems sharing one database can change their schema without downtime during a release.

Health probes and grace periods are set around your real startup time, and point out slow startup as something worth addressing separately.

Either, depending on your setup. We use whichever pattern fits your current hosting, whether that is a managed container service or a group of virtual machines.

Pairs well with

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