Is Pglogical free?
Customers can enable pglogical from within their Aurora PostgreSQL instances, and pay only for the additional clusters and cross-region traffic needed, with no upfront costs or software purchases required. Fully integrated, pglogical requires no triggers or external programs.
What is pglogical?
pglogical is a logical replication system implemented entirely as a PostgreSQL extension. Fully integrated, it requires no triggers or external programs. This alternative to physical replication is a highly efficient method of replicating data using a publish/subscribe model for selective replication.
What is Postgres BDR?
Bi-Directional Replication (BDR) is an asynchronous multi-master replication system for PostgreSQL, specifically designed to allow geographically distributed clusters. Supporting up to 48 nodes (and possibly more in future releases) BDR is a low overhead, low maintenance technology for distributed databases.
What is PostgreSQL replication?
What Is PostgreSQL Replication? The process of copying data from a PostgreSQL database server to another server is called PostgreSQL Replication. The source database server is usually called the Master server, whereas the database server receiving the copied data is called the Replica server.
What is PG bouncer?
PgBouncer is an open-source, lightweight, single-binary connection pooler for PostgreSQL. It can pool connections to one or more databases (on possibly different servers) and serve clients over TCP and Unix domain sockets. PgBouncer maintains a pool of connections for each unique user, database pair.
Where is PostgreSQL conf?
PostgreSQL configuration files are stored in the /etc/postgresql//main directory. For example, if you install PostgreSQL 12, the configuration files are stored in the /etc/postgresql/12/main directory. To configure IDENT authentication, add entries to the /etc/postgresql/12/main/pg_ident. conf file.
Is Postgres BDR free?
The BDR 1. x series for PostgreSQL 9.4 (+BDR patches) is open source. It will go EoL in December 2019. It works fine, but I don’t recommend it for new deployments given the planned EoL.
What is Repmgr in PostgreSQL?
repmgr is an open-source tool suite for managing replication and failover in a cluster of PostgreSQL servers. It enhances PostgreSQL’s built-in hot-standby capabilities with tools to set up standby servers, monitor replication, and perform administrative tasks such as failover or manual switchover operations.
What is PostgreSQL vs MySQL?
Postgres is an object-relational database, while MySQL is a purely relational database. This means that Postgres includes features like table inheritance and function overloading, which can be important to certain applications. Postgres also adheres more closely to SQL standards.
What is Wal_level in Postgres?
wal_level determines how much information is written to the WAL. The default value is minimal, which writes only the information needed to recover from a crash or immediate shutdown. Each level includes the information logged at all lower levels. This parameter can only be set at server start.
Why should I use Pgbouncer?
For those who do not know, PgBouncer a lightweight connections pooler for PostgreSQL. It reduces PostgreSQL resource consumption (memory, backends, fork). It supports online restart/upgrade without dropping client connections. It allows PostgreSQL restart/upgrade without dropping client connections.
Is Pgbouncer a load balancer?
PgBouncer is a popular connection pooler designed for PostgreSQL, but it is not enough to achieve PostgreSQL High Availability by itself as it doesn’t have multi-host configuration, failover, or detection. Using a Load Balancer is a way to have High Availability in your database topology.