When a deployment left two databases running
A failed deployment left old and replacement database and broker services running together. Recovery meant reconciling their state, replaying accepted orders, and changing how stateful services update.
The Software Engineer’s Notebook
Things I encounter while building software: the problems, the decisions, and what I learn along the way.
Notebook entries
A confusing age field broke the warehouse
A misunderstood estimated-age input produced future birth dates and negative ages. Fixing the resulting warehouse failures took clearer inputs, server validation, and careful repair of existing records.
When saving a request does not queue its work
Introducing a broker left a gap between committing application state and publishing a task. A transactional outbox made the intent to dispatch durable.