title

text

Vladimir Serduk
Vladimir Serduk SOFTPOINT
: December
22 мин

You have a distributed IT system, it has many nodes, BUT it has: - Lack of efficiency of exchange. Delay timing - hours or days? - Interference to users block during the exchange? - Poor handling - all nodes exchange status is not clear; - Low exchange stability, the need for manual control?

DBReplicaton - the technology of high-speed data exchange between PostgreSQL databases. This report presents a solution that runs in the tens of medium and large companies in Russia (> 2500 active users,> 20 nodes exchange), which has: - Own transport subsystem; - Centralized unified interface and control the exchange; - Bilateral exchanges: the ability to work with data on changes in all nodes involved in the exchange; - High data rate (2 seconds). Additionally, you will learn about the unusual use of replication in a variety of business systems.

Слайды

Видео

Другие доклады

  • Anastasia Lubennikova
    Anastasia Lubennikova Postgres Professional
    45 мин

    New B-tree features

    B-tree is the most widely used index type in PostgreSQL. This data structure and concerned algorithms are developed about forty years ago. But there is still an area for optimisations. In this presentation I'm going to talk about B-tree data structure, and its features important for the optimal index usage. Furthermore, I'll present a couple of new features which are expected to be included in PostgreSQL 9.6 release.

  • Dmitry Dolgov
    Dmitry Dolgov Zalando SE
    45 мин

    Jsonb in PostgreSQL and NoSQL trend: comparison and performance

    Schema-less is definitely a trend in the data storage nowadays, and it's not only about NoSQL, but also about traditional RDBMS. Many relational databases (e.g. PostgreSQL, Oracle, db2, Mysql) allow to storing data in the schema-less json format and use their own more or less unique way to do that.

    This talk contains two parts:

    • Comparison of the json support in PostgreSQL and different relational databases, namely Mysql, Oracle, db2, MSSql in terms of supported features, functions and so on.
    • Performance benchmarks for databases with the advanced json support, namely PostgreSQL and Mysql, and the MongoDB on different workload types and configurations.

  • Andres  Freund
    Andres Freund Citus Data
    45 мин

    Improving Postgres' Buffer Manager

    Postgresql's buffer manager has parts where it's showing its age. We'll discuss how it currently works, what problems there are, and what attempts are in progress to rectify its weaknesses.

    • Lookups in the buffer cache are expensive
    • The buffer mapping table is organized as a hash table, which makes efficient implementations of prefetching, write coalescing, dropping of cache contents hard
    • Relation extension scales badly
    • Cache replacement is inefficient
    • Cache replacement replaces the wrong buffers

  • Lev Laskin
    Lev Laskin Электрон
    22 мин

    Experience in using PostgreSQL as the database platform 1C: Enterprise 8.1 to 8.3

    In late 2006, the 1C company has implemented to work 1C:Enterprise platform with DBMS PostgreSQL, which can operate under the operating systems Windows or Linux. The talks will attempt to summarize the experience of sharing the platform 1C:Enterprise with PostgreSQL database since 2008. Consideration will be given a few success stories, technical features of the work are examples of specific tasks, offers advice on selecting and cons. The talk may be of interest to employees of companies considering the option of using PostgreSQL for the 1C:Enterprise, DBA, professionals interested in the possibility of extensibility PostgreSQL.