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Sales stores four aggregate roots and twenty-five value objects in three tables, by serialising whole aggregates into jsonb - and the reflection resolver that makes reconstitution work bypasses every invariant on the way in.
What the document strategy really costs - a promoted column, a side table, an in-memory dictionary with a TODO on it, and six update methods that look the row up without its id.
A stored number that can't explain itself is a number you can only trust. KC Star V4 promotes CalculationContext to JSONB and adds statistical columns to aggregates, so every fact carries a queryable record of the inputs and formula that produced it.
The read side of archive-on-delete: querying archives through promoted typed columns, digging into jsonb payloads for everything else, polling snapshots with a 202 pattern, and an honest accounting of the restore path ArchiveKit doesn't have yet. Part 9 wraps up the Archive-on-Delete with ArchiveKit series.
The storage design behind ArchiveKit - typed queryable columns and a jsonb payload from a single write, why the archive's EntityId is an index but deliberately not a foreign key, and the reflective model configuration that builds every archive table from one method call. Part 4 of the Archive-on-Delete with ArchiveKit series.
Seven parts of migration machinery existed to deliver one table — a hierarchical crumb trail with three ltree columns, a jsonb payload, GiST and GIN indexes, and a Dapper read side that speaks PostgreSQL's native operators. This is why it was PostgreSQL all along.
Pick the one closest to the role. Each is two pages and carries the same facts.
Applied AI
Agentic AI & Cloud Engineer · multi-agent systems, RAG and MCP on AWS
Cloud & .NET
C#, .NET 10 and ASP.NET Core microservices on AWS and Azure · Terraform & AWS CDK
Data Engineering
AWS lakehouse · Kinesis, Glue (PySpark), Apache Iceberg, Lake Formation
Everything
All three domains, with the standout project from each