The original title is "Hunting the Bottleneck: Why I Killed findOneAndUpdate in Vlox"

Short summary

The author describes replacing MongoDB's findOneAndUpdate with updateOne in their Vlox app to avoid shipping full document payloads over the network. findOneAndUpdate retrieves and serializes entire documents, causing server strain under load. updateOne skips document retrieval and returns only a confirmation count, letting the frontend reflect mutations locally.

• •findOneAndUpdate returns full document payloads, creating network bottlenecks
• •updateOne skips retrieval and returns only modifiedCount, reducing payload size
• •Frontend can optimistically reflect mutations without waiting for full document fetch

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