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optimisticConcurrency

Maurya Valambhiya answered on November 20, 2023 Popularity 4/10 Helpfulness 1/10

answer optimisticConcurrency

optimisticConcurrency

Comment

const House = mongoose.model('House', Schema({
  status: String,
  photos: [String]
}, { optimisticConcurrency: true }));

const house = await House.findOne({ _id });
if (house.photos.length < 2) {
  throw new Error('House must have at least two photos!');
}

const house2 = await House.findOne({ _id });
house2.photos = [];
await house2.save();

// Throws 'VersionError: No matching document found for id "..." version 0'
house.status = 'APPROVED';
await house.save();

Popularity 4/10 Helpfulness 1/10 Language whatever

Source: mongoosejs.com

Tags: optimistic-concurrency whatever

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