PgConf.Russia 2020

PostgreSQL с момента старта Avito решает серьезные и важные задачи. Вокруг СУБД были построены основные компоненты архитектуры. За 10 лет проект активно развивался, изменилась архитектура и инфраструктура.

Как вступление, сделаю обзор: эволюции архитектуры и инфраструктуры PostgreSQL в Avito; успешно решенных вызовов.

В основной части расскажу о статусе PostgreSQL в Авито 2020: микросервисная архитектура; шардирование; проблемы коммуналок; DBaaS( Database discovery, управление доступом, failover, backup, archive, вопросы разделения ресурсов итд.); вопросы интеграции; эволюция команды.

В заключение поделюсь нашим wishlist/нерешенными вопросами.

MobilityDB is an open source moving object database system (https://github.com/ULB-CoDE-WIT/MobilityDB). Its core function is to efficiently store and query mobility tracks, such as vehicle GPS trajectories. It implements the Moving Features specification from the Open Geospatial Consortium (OGC). MobiltyDB is engineered up from PostgreSQL and PostGIS, providing spatiotemporal data management via SQL. It thus integrates with the postgreSQL eco-system allowing for complex architectures such as mobility stream processing and cloud deployments.

The presentation will explain the architecture of MobilityDB, its database types, indexes, and operations. We will highlight the PostgreSQL features that enable this extension, and the would like to have features. This presentation will be of special interest to the PostgreSQL community, and to professionals in the transportation domain.

PostgreSQL is one of the most readily extensible databases in the world. Custom data types, aggregations, functions, and more can be easily and safely written in C.

This hands-on tutorial covers the basics of writing functions, data types, and aggregates in C. It is recommended (though not strictly required) that bring their own laptops and be prepared to actually try the exercises.

Topics covered include: 1. The PostgreSQL type system 2. Creating a simple custom type in C 3. Common errors for non-C programmers 4. Creating a simple aggregate in C

There will be many opportunities for questions and discussion through the tutorial.

Walk-through of extending PostgreSQL with a user-defined type. The journey begins from the basics, from creating simple domain types over existing types, and continues to implementing a full-blown datatype from scratch in C.

PostgreSQL's advanced index types, GiST, GIN, and SP-GiST, are covered in enough detail to give an understanding of what each of them is good for. Support functions for each of them are shown for the example 'color' datatype.