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 Duration 7 hours

Course Outline

1. Introduction to Distributed PostgreSQL

  • Challenges in scaling single-node PostgreSQL instances
  • Introduction to the Citus extension: objectives, architecture, and core components
  • Essential concepts: coordinator nodes, worker nodes, metadata, and distribution keys

2. Cluster Architecture and Configuration

  • Node distinctions: coordinator versus worker nodes
  • Table categories: distributed, replicated, and local tables
  • Installing and configuring Citus within existing PostgreSQL setups
  • Cluster discovery mechanisms and node administration

3. Data Distribution and Sharding Methodologies

  • Sharding techniques: hash-based versus append-based strategies
  • Choosing distribution columns for peak performance
  • Administration of distributed and replicated tables
  • Re-balancing shards and scaling out the cluster

4. Distributed Query Execution and Optimization

  • Mechanisms by which Citus routes and parallelizes query execution
  • Interpreting distributed query execution plans
  • Query pushdown techniques and execution optimization strategies

5. Consistency, Transactions, and Fault Tolerance

  • Two-Phase Commit (2PC) protocols and atomic operations
  • Managing failures within distributed transactions

6. Operational Management and Practical Applications

  • Monitoring tools and system views available for Citus
  • Maintenance procedures and upgrade processes in distributed environments

Requirements

  • Completion of the Advanced Administration (High Availability & Replication) module or comparable professional experience
  • Robust understanding of PostgreSQL configuration and performance optimization
  • Proficiency with Linux systems and fundamental networking concepts

Audience

Targeted at seasoned Database Administrators, DevOps Engineers, and System Architects who maintain production PostgreSQL environments and require strategies for horizontal scaling.

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