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Practical

Monitoring

EFFECTIVE STRATEGIES FOR

THE REAL WORLD

Mike Julian

Effective Strategies for the Real World

Practical Monitoring

Mike Julian

Beijing

Boston Farnham Sebastopol

Tokyo

Practical Monitoring

by Mike Julian

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November 2017:

First Edition

Indexer:

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Illustrator:

Rebecca Demarest

Revision History for the First Edition

2017-10-26:

2017-11-27:

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978-1-491-95735-6

[LSI]

Table of Contents

Preface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xi

Part I.

Monitoring Principles

1. Monitoring Anti-Patterns. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Anti-Pattern #1: Tool Obsession

Monitoring Is Multiple Complex Problems Under One Name

Avoid Cargo-Culting Tools

Sometimes, You Really Do Have to Build It

The Single Pane of Glass Is a Myth

Anti-Pattern #2: Monitoring-as-a-Job

Anti-Pattern #3: Checkbox Monitoring

What Does “Working” Actually Mean? Monitor That.

OS Metrics Aren’t Very Useful—for Alerting

Collect Your Metrics More Often

Anti-Pattern #4: Using Monitoring as a Crutch

Anti-Pattern #5: Manual Configuration

Wrap-Up

Pattern #1: Composable Monitoring

The Components of a Monitoring Service

Pattern #2: Monitor from the User Perspective

Pattern #3: Buy, Not Build

It’s Cheaper

You’re (Probably) Not an Expert at Architecting These Tools

SaaS Allows You to Focus on the Company’s Product

2. Monitoring Design Patterns. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

iii

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