Amazon Relational Database Service (Amazon RDS) is a database-as-a-service (DBaaS) from Amazon Web Services.
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EDB Postgres Advanced Server
Score 8.0 out of 10
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The EDB Postgres Advanced Server is an advanced deployment of the PostgreSQL relational database with greater features and Oracle compatibility, from EnterpriseDB headquartered in Bedford, Massachusetts.
Whether your organization is [an] early startup or large company AWS RDS fits in most of the cases such as 1. Easy to start, setup, used by [a] few or large developers team. 2. You can easily scale DB [instances] when your business required scaling as a startup or pay only for [users] to optimize cost as [a] large organization. 3. If your application requires SQL Server, Oracle, or Maria DB then you should use AWS RDS instance. 4. Your application requires better availability and security of data you can use AWS RDS instance. When AWS RDS is not recommended: 1. You need automatic scaling or capacity flexibility as request load gradually increases, better to use Amazon Aurora DB in this case.
It's great if you are using or wish to use PostgreSQL and need the added performance optimization, security features and developer and DBA tools. If you need compatibility with Oracle it's a must-have. There are many developer features that greatly assist dev teams in integrating and implementing complex middleware. It's great for optimizing complex database queries as well as for scaling. I would recommend Postgres Plus Advanced Server for any software development team that is hitting the limit of what PostgreSQL is capable of and wants to improve performance, security, and gain extra developer tools.
PPAS Oracle compatibility, especially the PL/SQL syntax, has made migrating database-tier code very simple. Most Oracle packages do not need to be changed at all and those that do are generally for simple reasons like a reserved word in PPAS that is allowed in Oracle.
PPAS xDB, the multi-master replication tool, is simple and - most important - does not break with network or other interruptions. We have been able to configure and forget, which our customers could never do with other multi-master tools.
Most people had no idea that PPAS and PostgreSQL have full CRUD support for JSON. They think you need a specialized product and/or that JSON is read-only. Every organization that I have worked with is evaluating adding JSON to their relational model.
You don't have os-level or hardware-level access to the system, so all your performance tuning needs to be done within your application or within the parameters of the database engine that amazon allows you to customize.
Customizations/Extensions to the database engines are impossible, as you don't have OS-level access.
Migrating in/out of RDS with zero down time can be relatively challenging from a configuration and execution perspective, depending on your infrastructure.
Documentation is excellent but spread out across many resources and can take a while to wade through—would benefit from having more intro level, getting started guides for various languages.
Ruby support is excellent but more Ruby examples and beginner-level documentation would be nice.
It is sometimes hard to find a community of users on StackOverflow so a larger community, and a dedicated forum with active members to answer questions and work through issues would be nice.
It has worked reliably in the past, we have not had any problems that would have been caused because of using RDS. Also it's future-proof, it will scale easily if user base of the application that relies on it is going to increase rapidly. Our application deployments also rely on it so renewing it is essential for business & switching to different provider would cause costs without any apparent benefit.
I've been using AWS Relational Database Services in several projects in different environments and from the AWS products, maybe this one together to EC2 are my favourite. They deliver what they promise. Reliable, fast, easy and with a fair price (in comparison to commercial products which have obscure license agreements).
I have only had good experiences in working with AWS support. I will admit that my experience comes from the benefit of having a premium tier of support but even working with free-tier accounts I have not had problems getting help with AWS products when needed. And most often, the docs do a pretty good job of explaining how to operate a service so a quick spin through the docs has been useful in solving problems.
[Amazon Relational Database Service (RDS)] is much better to have everything in the cloud instead of having it on-premise once you can get all the benefits from Cloud. Of course, it can be a bit expensive if your company it's not growing anymore but if you check it in detail, you can see that the scalability of Cloud makes a lot of sense and also the reliability.
PPAS proved better for our customer's data-centric apps than Oracle in all but a few edge cases (encryption at rest and multi-TB database-tier backups) because it is simpler to install/maintain, runs nearly all Oracle-syntax SQL as well as ANSI SQL. PPAS has much more JSON capabilities (full CRUD vs. read-only in Oracle), simpler geospatial, simpler / more stable replication and datatypes that match developer expectations, such as BOOLEAN and ENUMs.
RDS has made sure that we don't spend a lot of time resolving issues that are not even remotely relevant to our business use-cases. It has thus made the life of DB administrators easy which allows them to explore other avenues as well.
Using RDS for around 10 years now, we have never had an issue BECAUSE of RDS. It is a very reliable service.
Postgres Plus Advanced Server is quite complex and may take longer to implement certain things than simply using PostgreSQL depending on developer familiarity with the platform.
Getting up to speed can be daunting so again, there is an upfront cost in time spent learning the platform, besides the potential for extra time spent on a feature-by-feature basis.
The cost of Postgres Plus Advanced Server should be weighed against simply using PostgreSQL to decide which is the best solution for your business needs.
