

PostgreSQL and Microsoft Azure Cosmos DB are major contenders in the database category. While PostgreSQL is recognized for its versatility and robust community support, Microsoft Azure Cosmos DB stands out with performance and integration with other Microsoft products.
Features: PostgreSQL offers strong spatial support, perfect for GIS applications, along with features like full-text search, partitioning, and JSON support. Azure Cosmos DB is noted for its excellent multi-model database capabilities, global distribution, and seamless integration with Microsoft products, enhancing its suitability for real-time analytics.
Room for Improvement: PostgreSQL users would benefit from advanced input/output tools, improved scalability for large applications, and enhanced GUIs. Meanwhile, Microsoft Azure Cosmos DB is challenged by a complex pricing structure, limited analytical functionalities, and high costs for vector searches.
Ease of Deployment and Customer Service: PostgreSQL provides flexibility in deployment across various environments, with community support available, though lacking official customer service. Azure Cosmos DB is closely tied to the Azure cloud, offering strong integration with Azure services and enterprise-level customer support, albeit with less deployment flexibility outside the Azure ecosystem.
Pricing and ROI: PostgreSQL is cost-effective as an open-source solution without licensing fees, though expertise investment is needed. In contrast, Microsoft Azure Cosmos DB bears higher costs due to its features and infrastructure, with a resource consumption-based pricing model that can offer justified performance and scalability returns for businesses.
Getting an MVP of that project would have taken six to eight months, but because we had an active choice of using Azure Cosmos DB and other related cloud-native services of Azure, we were able to get to an MVP stage in a matter of weeks, which is six weeks.
You can react quickly and trim down the specs, memory, RAM, storage size, etc. It can save about 20% of the costs.
When I have done comparisons or cost calculations, I have sometimes personally seen as much as 25% to 30% savings.
Premier Support has deteriorated compared to what it used to be, especially for small to medium-sized customers like ours.
The response was quick.
I would rate customer service and support a nine out of ten.
If PostgreSQL is hosted on cloud services such as Amazon RDS or Google Cloud SQL, the support is handled by the cloud provider, who provides automated backups, monitoring, infrastructure management, and technical support tickets.
Overall, we have a very small customer service team and a good engineering team with no overburden or bandwidth issues.
The system scales up capacity when needed and scales down when not in use, preventing unnecessary expenses.
We like that it can auto-scale to demand, ensuring we only pay for what we use.
We have had no issues with its ability to search through large amounts of data.
Now, we are doing the same level of transactions in PostgreSQL, around 100,000 transactions, and we are getting good throughput with no latency.
We have multiple availability zones, so nothing goes down.
Azure Cosmos DB would be a good choice if you have to deploy your application in a limited time frame and you want to auto-scale the database across different applications.
I would rate it a ten out of ten in terms of availability and latency.
I have never seen any performance issue in PostgreSQL.
We must ensure data security remains the top priority.
You have to monitor the Request Units.
The dashboard could include more detailed RU descriptions, IOPS, and compute metrics.
Query optimization improves slow queries by using proper indexes, avoiding unnecessary joins, and using EXPLAIN ANALYZE to inspect query plans.
If I need to increase the dimension to 3,000 or 5,000, that option should be available.
Initially, it seemed like an expensive way to manage a NoSQL data store, but so many improvements that have been made to the platform have made it cost-effective.
Cosmos DB is expensive, and the RU-based pricing model is confusing.
Cosmos DB is great compared to other databases because we can reduce the cost while doing the same things.
Even with doing 100,000 transactions right now within PostgreSQL, we are happy with PostgreSQL and not seeing that it is expensive or going out of budget.
The most valuable feature of Microsoft Azure Cosmos DB is its real-time analytics capabilities, which allow for turnaround times in milliseconds.
Performance and security are valuable features, particularly when using Cosmos DB for MongoDB emulation and NoSQL.
The performance and scaling capabilities of Cosmos DB are excellent, allowing it to handle large workloads compared to other services such as Azure AI Search.
PostgreSQL improves reliability, performance, and scalability in production. Since it is ACID compliant, it ensures that database transactions are safe and consistent, preventing partial data updates, maintaining data integrity, and allowing multiple users to read or write data simultaneously using MVCC.
The best feature is performance, because of which I decided on PostgreSQL.
| Product | Mindshare (%) |
|---|---|
| Microsoft Azure Cosmos DB | 6.2% |
| PostgreSQL | 8.6% |
| Other | 85.2% |


| Company Size | Count |
|---|---|
| Small Business | 33 |
| Midsize Enterprise | 22 |
| Large Enterprise | 58 |
| Company Size | Count |
|---|---|
| Small Business | 58 |
| Midsize Enterprise | 26 |
| Large Enterprise | 48 |
Microsoft Azure Cosmos DB offers scalable, geo-replicated, multi-model support with high performance and low latency. It provides seamless Microsoft service integration, benefiting those needing flexible NoSQL, real-time analytics, and automatic scaling for diverse data types and quick global access.
Azure Cosmos DB is designed to store, manage, and query large volumes of both unstructured and structured data. Its NoSQL capabilities and global distribution are leveraged by organizations to support activities like IoT data management, business intelligence, and backend databases for web and mobile applications. While its robust security measures and availability are strengths, there are areas for improvement such as query complexity, integration with services like Databricks and MongoDB, documentation clarity, and performance issues. Enhancements in real-time analytics, API compatibility, cross-container joins, and indexing capabilities are sought after. Cost management, optimization tools, and better support for local development also require attention, as do improvements in user interface and advanced AI integration.
What are the key features of Azure Cosmos DB?Industries use Azure Cosmos DB to support business intelligence and IoT data management, using its capabilities for backend databases in web and mobile applications. The platform's scalability and real-time analytics benefit sectors like finance, healthcare, and retail, where managing diverse datasets efficiently is critical.
PostgreSQL is a versatile and reliable database management system commonly used for web development, data analysis, and building scalable databases.
It offers advanced features like indexing, replication, and transaction management. Users appreciate its flexibility, performance, and ability to handle large amounts of data efficiently. Its robustness, scalability, and support for complex queries make it highly valuable.
Additionally, PostgreSQL's extensibility, flexibility, community support, and frequent updates contribute to its ongoing improvement and stability.
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