PostgreSQL – Performance Optimization (PGSQL3)

Databases, PostgreSQL

This hands-on course focuses on practical PostgreSQL performance tuning, emphasizing configuration, query execution plans and indexes to improve throughput and reduce latency in real-world deployments.

Through labs and real examples you will learn tools for performance measurement, bottleneck identification and index-friendly query writing, plus strategies for reducing I/O, tuning WAL and scaling with replication and partitioning.

THIS TRAINING COURSE WILL HELP YOU:

  • Configure PostgreSQL optimally for a specific workload
  • Analyze and interpret query execution plans
  • Design and use appropriate index types
  • Identify and remove CPU, RAM, I/O and network bottlenecks
  • Implement partitioning and use replication to scale systems

WHO SHOULD ATTEND?

  • Database administrators (DBAs)
  • Backend developers working with PostgreSQL
  • DevOps and SRE teams managing database services
  • Data engineers and analysts optimizing queries
  • IT architects designing database scaling strategies

COURSE LOCATION AND AVAILABLE DATES



Choose whether to attend in person in our classroom or join online. You can select your preferred format during registration. Learn more about hybrid training.
Praha + online (optional)
VirtualPro (online)
Private training

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Course content:

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  • Basic factors affecting database performance
    1. Application layer considerations
    2. CPU, RAM, I/O, network and environmental constraints
  • PostgreSQL architecture that impacts performance
    1. Server processes
    2. Memory management and configuration
    3. I/O operations
    4. WAL (Write-Ahead Logging)
  • Query processing
    1. Architecture overview
    2. Query processing stages
  • Optimal PostgreSQL configuration for performance
  • Identifying bottlenecks
  • Execution plans
    1. Overview
    2. Viewing, visualizing and interpreting plans
    3. Cost estimation
    4. Caching effects
  • Indexes
    1. How indexes work
    2. Index types
    3. B+ Tree vs Hash indexes
    4. GIN / GiST indexes
    5. Using indexes and writing index-friendly applications
  • Using indexes
    1. Operations accelerated by indexes
    2. Index-only scans
    3. HOT (Heap-Only Tuples)
  • Full-text search
    1. PostgreSQL full-text options overview
  • Indexing special data types
    1. JSON
    2. XML
    3. and other types
  • JOIN optimization
    1. Hash join
    2. Merge join
    3. Nested loop
  • Partitioning
    1. Overview
    2. Purpose and use cases
    3. Advantages and disadvantages
  • Caching in PostgreSQL
  • Scaling performance
    1. Overview
    2. Using replication for scaling
Prerequisites:
Basic computer skills; familiarity with database concepts is a plus.
Recommended previous course:
PostgreSQL – Programming in PL/pgSQL and Advanced Development Techniques (PGSQL2)
Recommended follow-up course:
PostgreSQL – Replication and High Availability (PSTGR3)
Schedule:
2 days (9:00-17:00)
Price per person:
576.00 € ( 696.96 € incl. 21% VAT)

Training and learning environment

IT classroom with desks, computer monitors, and a projection screen at the front.
What does the environment for in-person IT courses look like?We hold training courses in our own classrooms equipped with modern computer equipment for each participant and a large projection screen. Each workstation is fitted with a powerful computer for seamless practical exercises, and the environment supports a calm, friendly atmosphere during training.
IT classroom with desks, computer monitors, and a projection screen at the front.
Do I need to bring my own laptop to the classroom IT course?Our training rooms are fully equipped, so you do not need to bring your own laptop. A modern computer with all necessary hardware and software is ready for you at your workstation.
Sample ICT Pro certificate of successful completion of an IT training course.
Will you receive an official certificate after completing an IT course?Yes, upon successful completion of the training course, you will receive an official ICT Pro certificate confirming your participation and acquired technical skills. You can use it to verify your qualifications or add it to your professional profile.
Exterior view of the COMGUARD office building on Sochorova Street in Brno.
Where can you find our training center in Brno?The premises of the ICT Pro training center are located on the 1st floor of the COMGUARD building at Sochorova 38 in Brno. Positioned on the border of Žabovřesky and Komín, the location is easily accessible by both car and public transport.
Exterior view of the Opatov Park office building in Prague, Chodov.
Where can you find our training center in Prague?The premises of the ICT Pro training center are located on the 1st floor of the Opatov Park building at Líbalova 1, Prague 11 – Chodov. The location provides a comfortable environment for your education with convenient access.
Fully equipped kitchenette with a coffee machine, microwave, sink, and shelves with cups and glasses.
What facilities and refreshments are available to you during training breaks?Our training centers feature a fully equipped kitchenette for a comfortable break during your courses. The facilities include a coffee machine, microwave, kettle, and a wide selection of drinks and snacks.
Coffee station featuring an automatic coffee machine, yellow and white cups, glasses, and syrups.
What beverage refreshments are available during your course?A beverage station with a coffee machine, teas, syrups, and water is at your disposal throughout the entire training session. You can enjoy a coffee or another drink of your choice anytime during breaks.
Table with sweet pastries, fruit syrups, a water dispenser, and glasses set up for training participants.
What light refreshments are provided for you during the courses?During course breaks, participants can enjoy light sweet snacks, pastries, and fruit syrups to mix their own drinks. Fresh water dispenser and plates are also available for your convenience.
Wicker baskets filled with packaged savory snacks, sweet biscuits, and snack bars.
Should I bring my own snacks to ICT Pro training?There is no need to. A wide selection of savory snacks, sweet biscuits, and snack bars is available for you during breaks. Boost your energy for all-day focus right inside the training center premises.
Outdoor wooden terrace with green surroundings by the glass building of the training center.
Can you spend training breaks in the fresh air?Yes, an outdoor terrace is available at our training center. During breaks between learning sessions, you can relax in the fresh air in a pleasant green environment.
Spacious outdoor wooden terrace with seating and views of the surrounding area.
Where can you relax during course breaks?Our training center features a spacious outdoor terrace with seating options. During breaks between learning sessions, you can step outside to relax and recharge in the fresh air.