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 Duration 7 hours

Course Outline

1. Introduction to Distributed PostgreSQL

  • Scaling limitations associated with single-node PostgreSQL
  • Overview of the Citus extension: its purpose, architectural design, and core components
  • Essential concepts: coordinator nodes, worker nodes, metadata, and distribution keys

2. Cluster Architecture and Setup

  • Distinguishing between node types: coordinators and workers
  • Table categories: distributed, replicated, and local tables
  • Installation and configuration of Citus within existing PostgreSQL setups
  • Cluster discovery processes and node administration

3. Data Distribution and Sharding Strategies

  • Sharding techniques: comparing hash and append methods
  • Choosing the optimal distribution column for performance
  • Administering distributed and replicated tables
  • Re-balancing shards and strategies for scaling out

4. Distributed Query Execution and Optimisation

  • Mechanisms for query routing and parallel execution in Citus
  • Interpreting distributed query execution plans
  • Optimizing performance through query pushdown

5. Consistency, Transactions and Fault Tolerance

  • Two-Phase Commit (2PC) and ensuring atomic operations
  • Strategies for handling failures within distributed transactions

6. Operational Management and Use Cases

  • Utilizing monitoring tools and specific views for Citus
  • Maintenance procedures and upgrade processes in distributed environments

Requirements

  • Completion of Advanced Administration (High Availability & Replication) or equivalent practical experience
  • Proficient knowledge of PostgreSQL configuration and performance tuning
  • General familiarity with Linux operating systems and fundamental networking concepts

Target Audience

Senior Database Administrators, DevOps Engineers, and System Architects who currently oversee production PostgreSQL environments and are seeking strategies to achieve horizontal scaling.

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