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 Duration 7 hours

Course Outline

1. Introduction to Distributed PostgreSQL

  • Challenges associated with scaling single-node PostgreSQL instances
  • An overview of the Citus extension, including its purpose, architecture, and core components
  • Foundational concepts: coordinator nodes, worker nodes, metadata, and distribution keys

2. Cluster Architecture and Setup

  • Distinguishing between node types: coordinators versus workers
  • Understanding table classifications: distributed, replicated, and local tables
  • Steps for installing and configuring Citus within existing PostgreSQL environments
  • Processes for cluster discovery and node administration

3. Data Distribution and Sharding Strategies

  • Comparison of sharding methods: hash partitioning versus append-only strategies
  • Criteria for selecting the optimal distribution column to maximize performance
  • Best practices for managing distributed and replicated tables
  • Techniques for re-balancing shards and scaling out the cluster

4. Distributed Query Execution and Optimisation

  • Mechanisms by which Citus routes and parallelizes query execution
  • Interpreting distributed query execution plans
  • Implementing query pushdown and executing optimizations

5. Consistency, Transactions and Fault Tolerance

  • Application of Two-Phase Commit (2PC) and atomic operations
  • Strategies for managing failures within distributed transactions

6. Operational Management and Use Cases

  • Utilization of monitoring tools and system views specific to Citus
  • Maintenance procedures and upgrade protocols for distributed environments

Requirements

  • Successful completion of the Advanced Administration (High Availability & Replication) course or possession of equivalent practical experience
  • Proficient knowledge of PostgreSQL configuration parameters and performance tuning techniques
  • Working familiarity with Linux operating systems and fundamental networking concepts

Audience

Experienced Database Administrators, DevOps Engineers, and System Architects who currently manage production PostgreSQL environments and require strategies to achieve horizontal scaling.

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