This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| { | |
| projection: { | |
| myLargeArray: { | |
| $slice: ['$myLargeArray', 0, 10] | |
| } | |
| } | |
| } |
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| db.assets.find({}, { | |
| projection: { | |
| marketCap: 1, | |
| lastPrice: 1, | |
| marketShares: { $divide: ["$marketCap", "$lastPrice"] } | |
| } | |
| }) |
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| db.assets.find({ | |
| marketCap: { $gt: 10000 } | |
| }, { | |
| projection: { isin: 1 } | |
| }) |
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| db.assets.find({}, { | |
| projection: { | |
| "lastPrice": 0, | |
| "marketCap": 0 | |
| } | |
| }) |
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| db.assets.find({}, { | |
| projection: { | |
| "lastPrice": 0 | |
| } | |
| }) |
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| db.assets.find({ | |
| myArray: { | |
| $elemMatch: { | |
| myProperty: 'val' | |
| } | |
| } | |
| }) |
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| db.assets.find({ | |
| "myArray.0": { $exists: true } | |
| }) |
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| db.assets.find({ | |
| ipoDate: { $gt: ISODate('2015-01-01')}, | |
| "dividends.date": { $gt: ISODate('2022-07-01') } | |
| }) |
kevcodez
/ sample_asset.json
Created
October 7, 2022 14:45
medium_mongodb_performance_sample_document
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| { | |
| "_id": "1232312323", | |
| "name": "Apple", | |
| "isin": "US123456890", | |
| "marketCap": 1233413233.123, | |
| "ipoDate": "2000-01-01", | |
| "lastPrice": 123.23, | |
| "dividends": [ | |
| { | |
| "date": "2022-01-01", |
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| // Scheduled job running at 4:30 am | |
| cron.scheduleJob('30 4 * * *', async () => { | |
| // Acquire distributed lock | |
| await lockService.acquireAndExecute({ name: 'translateAssets', ttlSeconds: 60 * 60 }, async () => { | |
| // code to translate assets | |
| }) | |