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ActiveRecord makes simple queries trivial and complex queries dangerous. These are the patterns that remain correct under load — and the common ones that quietly fall apart at scale.
Read more“We don’t allow remote work for this role.” For contractors, that sentence often signals something bigger than just a policy—it signals a broken setup.
Read moreDeadlocks are deterministic — given the same access patterns and lock ordering, they will occur reliably — which means they are preventable once you understand the conditions that create them.
Read moreThread safety is not a property you add after the fact — it is a design decision made at the class level. Three strategies cover nearly every case: confinement, immutability, and synchronization. Here is how to reason about which applies and how to apply it correctly.
Read moreFixed price contracts transfer risk to the contractor and invite scope games; time and materials contracts transfer risk to the client and require active oversight — understanding which risk you are better positioned to manage determines which model to use.
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