Developer Replaces findOneAndUpdate with updateOne to Fix MongoDB Performance Drain

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A developer refactoring the backend of an app called Vlox identified findOneAndUpdate as a critical performance bottleneck, as it forces MongoDB to retrieve and return the entire document to Node.js. Early fixes such as database indexing and action rate limits failed to resolve the underlying issue and worsened user experience. The solution was switching to updateOne, which skips document retrieval entirely and returns only a lightweight confirmation object containing a modified count. With this change, the frontend updates locally upon receiving a success status, eliminating unnecessary data transfer across the network. The developer has shared the optimized code on GitHub for others facing similar MongoDB performance issues.

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