Hybrid, multi-cloud flexibility PGD is available for PostgreSQL, EDB Postgres Advanced Server (EPAS), and EDB Postgres Extended (PGE), for self-managed databases and Kubernetes environments. Unplanned outages p
The idea was simple: each PGD node has a HARP manager service that conveys node status to the DCS, and any HARP router contacts the DCS to obtain the canonical lead master of the database cluster. Clients then connect to the HARP router. The architecture of this was a bit more ...
cluster table using index 会锁表,期间查询都不允许。如果一个表已经按照某个index cluster过了,那么下次的时候不需要制定index名称。PG标准是不支持分区表的,如果需要可以参考: http://www.postgresql.org/docs/9.0/interactive/ddl-partitioning.htmlALTER TABLE t1 SET (fillfactor = 70); 相当于pctfree...
https://crunchydata.github.io/postgres-operator/latest/architecture/high-availability/ 同步复制 https://crunchydata.github.io/postgres-operator/latest/architecture/high-availability/#synchronous-replication-guarding-against-transactions-loss 克隆 使用pgo create cluster --restore-from从现有集群或备份创建新集群。
A zero-data loss architecture is employed in the event a master node fails and a replica node is promoted to the new master. This failover can usually be performed in under 30 seconds. Multiple cluster database nodes enable scaling-out query read performance across multiple server...
Fiabilité améliorée :une défaillance indépendante des nœuds de calcul ou de stockage garantit la sécurité des données. Même en cas de panne d'une machine de calcul, les données restent sécurisées dans le cluster de stockage. ...
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所以两副本还是三副本技术上都可以,patroni本身对此无限制(技术上来看,1个单机etcd+2个patroni单服务器都可以实现伪集群架构https://www.cybertec-postgresql.com/en/patroni-setting-up-a-highly-available-postgresql-cluster/),要求通常更多的取决于业务。比如主机房主备,灾备机房再加一个副本,但是灾备机房副本永...
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In this section, we will discuss some typical error scenarios in a dual strategy cluster. Network connection between the master and slave is dead 如果网络死了,master 可能无法再成功执行 archive_command 操作。 XLOG 文件的历史记录必须保持连续,因此主机必须将这些 XLOG 文件排队以供以后归档。 这可能是...