Engineering notes

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• Synchronizing Identity Data with Keycloak

  Keeping an identity provider aligned with a system of record as people join, move and leave.

• Designing Idempotent APIs

  Idempotency keys, natural keys and safe retries for payment and ingestion endpoints.

• Designing Reliable Reconciliation Pipelines

  Matching records across systems you do not control, and why a weeks-long process can often become minutes.

• EF Core vs Dapper: Choosing the Right Tool

  Using both in the same codebase — where each earns its place, and how to keep the boundary clear.

• Building Reliable Background Services in .NET

  Designing long-running workers that can be stopped, resumed and observed — lessons from generating payslips at scale.

• Partitioning PostgreSQL Tables for Large Datasets

  When declarative partitioning helps, when it does not, and how to introduce it to a table that is already large.