goodindexes.com

What It Is

Good Indexes is a comprehensive book about database indexes. Its core goal is to help developers understand indexes and create the right ones for slow queries. The page clearly emphasizes that it is neither a generic database administration book nor a blog post or YouTube-style resource limited to simple examples; instead, it aims to strike a balance between theory and practice.

Core Content and Learning Format

Based on the available content, the course focuses on database indexing, SQL query performance optimization, and troubleshooting slow queries. The learning format is closer to self-paced ebook study than to live classes, recorded video courses, or 1-on-1 coaching. The page mentions access to two free chapters, stresses using simple principles to understand complex database internals, and also notes that illustrations are included to aid comprehension. Although the teaching language is not separately stated, the entire page is in English, so the primary learning language can be assumed to be English.

Instructor and Target Audience

The author, Tobias Petry, describes himself as a full-stack developer who also used to struggle with writing high-performance queries. He says he spent more than 10 years learning databases through books, conferences, training, articles, and extensive hands-on practice, and that through consulting work he found many developers faced similar problems. The page also includes endorsements from people associated with Laravel, Livewire/Alpine.js, and PlanetScale. The target audience is very clear: developers who can write SQL but lack confidence when creating the right indexes for complex queries; and those who want to gain practical knowledge over a few evenings rather than systematically study the full body of DBA knowledge.

Pricing and Certificates

The page only shows Buy Now and Get Two Free Chapters, without disclosing a specific price, payment methods, refund policy, or edition differences. It also does not mention certification or a completion certificate. As a result, it is better suited as a skill-building learning resource than as a certificate course for job applications.

Pros and Cons

Its strengths are a focused topic and clear positioning. It avoids the excessive DBA-oriented content—such as backups and tuning—that often appears in traditional database tomes, while also being more systematic than fragmented tutorials. The potential drawback is incomplete public information: no table of contents, page count, supported database types, update policy, Q&A support, or price is visible, making it difficult to fully assess the quality of the deliverable before purchasing.

Access from China and Alternatives

Access from mainland China cannot be determined from the text, and payment methods are not specified. Before purchasing, it is advisable to confirm whether the website is accessible and whether payment supports domestic Chinese bank cards or PayPal. If reading in English is a burden, alternatives worth comparing include Use The Index, Luke, official database documentation, and MySQL/PostgreSQL performance optimization courses on Chinese platforms.