为了大幅降低备份成本，Penn提出了几种处理长期备份的经济高效方法。一种方法是使用快照导出到S3，可以是完全或部分导出，以Apache Parquet格式存储数据，由于其压缩性，非常适合使用Amazon Athena等工具进行存储和查询。另一种替代方案是使用逻辑备份，采用本地数据库工具，如Postgres的pg_dump或MySQL的mysqldump。无论是快...
RDS Postgres通过terraform将复本读取为多az 、、、 我发现了一篇关于使用RDS read replica作为多AZ的有趣文章。https://aws.amazon.com/about-aws/whats-new/2018/01/amazon-rds-read-replicas-now-support-multi-az-deployments所以我想使用Terraform来部署这个策略,但是在Terraform文档中没有任何关于部署Postgresql数据...
Though RDS facilitates replication configuration and management, the best practices described here remain essential to minimizing replication lag. These practices also help optimize DR strategy, read workload, and healthy source instances. For more information about RDS Postgres Read Replica limitations, mo...
Postgres=>ALTER SUBSCRIPTION subscription-name CONNECTION host=reader-instance-endpoint 您不能同时在多个数据库实例上使用相同的复制槽。当两个或更多应用程序从集群中的不同数据库实例复制逻辑更改时,某些更改可能由于集群失效转移或网络问题而丢失。在此类情况下,您可以使用实例端点在主机连接字符串中进行逻辑复制。
Aurora is “AWS cloud optimized” and claims 5x performance improvement over MySQL on RDS, over 3x the performance of Postgres on RDS Aurora storage automatically grows in increments of 10GB, up to 128 TB. Aurora can have 15 replicas while MySQL has 5, and the replication process is faster...
创建pgpool数据库健康心跳用户,检查只读节点回放延迟(wal replay),只要能登录postgres数据库或指定的库即可,配合pgpool参数使用。示例如下: create role nobody login encrypted password 'xxxxxxx'; 创建从库 为简化测试步骤,在同一ECS实例创建备库。 使用pg_basebackup在线创建...
lt allows you to create databases in the cloud that are managed by AWS Postgres MySQL MariaDB Oracle Microsoft SQL Server Aurora (AWS Proprietary database) Advantage over using RDSversusdeploying DB on EC2 RDS is a managed service:Automated provisioning, OS patching Continuous backups and restore...
aws rds describe-db-engine-versions --engine postgres --engine-version 12.22 --query "DBEngineVersions[*].ValidUpgradeTarget[*].{EngineVersion:EngineVersion}" --output table --- |DescribeDBEngineVersions| +---+ | EngineVersion | +---+ | 13.18 | | 14.15 | |...
postgres = optional(object({ temp_buffers = optional(object({ value = optional(string, 4096 * 1024 / 8) apply_method = optional(string, "immediate") })) work_mem = optional(object({ value = optional(string, 4096 * 1024) apply_method = optional(string, "immediate") ...
aws rds describe-db-engine-versions ^ --engine postgres ^ --engine-versionversion-number^ --query "DBEngineVersions[*].ValidUpgradeTarget[*].{EngineVersion:EngineVersion}" --output text For example, to identify the valid upgrade targets for a PostgreSQL version 16.1 database, run the following...