Target Trek ebooks: System Design, Java and GenAI

Explore practical ebooks on System Design HLD, Java LLD, Google ADK, RAG, MCP, GenAI, and backend engineering from Target Trek.

Frequently asked questions

Which Target Trek book should I start with?

For architecture, scalability and system design interviews start with the System Design HLD book. For object-oriented design in Java choose the LLD book. For AI engineering, explore the Google ADK, RAG and MCP guides.

What is the difference between HLD and LLD?

HLD (high-level design) covers scalable architecture, APIs, databases, caching and distributed systems. LLD (low-level design) covers classes, interfaces, UML, design patterns and Java implementation.

How do I read the ebooks after buying?

Our books are digital ebooks. After a successful payment you receive a secure access link and can read the book in the built-in reader on the Target Trek website.

Are ebook purchases refundable?

Ebooks are digital products and purchases are final and non-refundable, so please review the book details and our Refund Policy before buying.

Who do I contact for purchase or access help?

Email [email protected] with your order reference and we will help with purchase and access issues.