Deployment strategies

Source: Dev.to | Jan 05, 2026 (UTC)

In Kubernetes Deployments, these are the main deployment (release) strategies you need to know as a DevOps engineer.

1️⃣ Rolling Update (Default & Most Common)

What it is

  • Kubernetes gradually replaces old Pods with new Pods
  • No downtime when configured correctly

How it works

  • Some old Pods are terminated
  • New Pods are created step by step
  • Traffic is shared during the transition

Key settings

strategy: type: RollingUpdate rollingUpdate: maxUnavailable: 1 maxSurge: 1

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Pros

Cons

Use when

2️⃣ Recreate Strategy

What it is

Config

strategy: type: Recreate

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Pros

Cons

Use when

3️⃣ Blue-Green Deployment

What it is

How

Pros

Cons

Use when

4️⃣ Canary Deployment

What it is

How

Pros

Cons

Use when

5️⃣ A/B Testing (Advanced)

What it is

Pros

Cons

Use when

📊 Quick Comparison

Strategy

Downtime

Risk

Complexity

Prod Use

Rolling Update

No

Medium

Low

✅ Yes

Recreate

Yes

High

Very Low

❌ Rare

Blue-Green

No

Low

Medium

✅ Yes

Canary

No

Very Low

High

✅ Yes

A/B Testing

No

Very Low

Very High

⚠️ Special

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