Five identical workers for a civic inventory sync all append to the same local file on a shared mount and capacity stops growing linearly. What is the scalability fix?
Select an answer to reveal the explanation.
Short Explanation
Five clerks scribbling in one notebook at once collide—they do not become five times faster. Shared writable files are a scale ceiling. Move the state to a proper shared store or shard it; spawning more writers against the file is not the fix.
Full Explanation
Multiple workers appending the same local inventory file collide and will not add capacity linearly. The scalability fix is moving that mutable state to a store the workers can share safely, or sharding it. Starting more workers against the same shared-mutable resource only worsens contention and is not a database-SKU shopping exercise.