Question 1

How do I connect to PostgreSQL with Npgsql in .NET Core?

Accepted Answer

Use the NpgsqlDataSourceBuilder with your connection string to create a data source, then open a connection asynchronously. Install the Npgsql NuGet package and reference it in your code for basic ADO.NET operations.

Question 2

Npgsql vs Dapper for PostgreSQL: which should I use?

Accepted Answer

Npgsql is the data provider for raw ADO.NET access or with Entity Framework Core, while Dapper is a micro-ORM layered on top. Choose Npgsql for full PostgreSQL feature support and performance; use Dapper for simpler object mapping if you prefer lightweight ORM approaches.

Question 3

How to handle bulk inserts efficiently with Npgsql?

Accepted Answer

Utilize the bulk copy API, such as NpgsqlBinaryImporter, to stream large data volumes directly into PostgreSQL. This minimizes network overhead and improves performance compared to individual INSERT statements.

Question 4

Does Npgsql support JSONB types in PostgreSQL?

Accepted Answer

Yes, Npgsql fully supports PostgreSQL's JSON and JSONB types with built-in serialization. You can map .NET objects to JSON columns seamlessly, enabling complex data structures without manual parsing.

Question 5

How to set up failover and load balancing with Npgsql?

Accepted Answer

Configure multiple hosts in your connection string using parameters like Host, and Npgsql will handle automatic failover and load distribution. Refer to the documentation for options like TargetSessionAttributes to fine-tune behavior.

Question 6

What are common performance tuning tips for Npgsql?

Accepted Answer

Enable connection pooling, use parameterized queries to prevent SQL injection, and prefer async methods for scalability. Also, leverage bulk operations and optimize type mappings to reduce serialization overhead.

npgsql

What is npgsql?

Overview

Use Cases

Best For

Related Projects

Found a gem we're missing?

Not Ideal For

Pros & Cons

Pros

Cons

Frequently Asked Questions