Auto-delete documents when expired on MongoDB












3















I'm developing a PHP application that stores a historical log in a MongoDB collection.



After 1 hour, these data are not important and are deleted by a CRON process that runs every hour.



The question is, is there any other solution to remove these documents automatically after a period of time since its insertion?



Thank you very much!






php mongodb







share|improve this question























  • That's a very nice question +1

    – CesarTrigo
    Nov 15 '14 at 16:39
















3















I'm developing a PHP application that stores a historical log in a MongoDB collection.



After 1 hour, these data are not important and are deleted by a CRON process that runs every hour.



The question is, is there any other solution to remove these documents automatically after a period of time since its insertion?



Thank you very much!






php mongodb







share|improve this question























  • That's a very nice question +1

    – CesarTrigo
    Nov 15 '14 at 16:39














3












3








3


1






I'm developing a PHP application that stores a historical log in a MongoDB collection.



After 1 hour, these data are not important and are deleted by a CRON process that runs every hour.



The question is, is there any other solution to remove these documents automatically after a period of time since its insertion?



Thank you very much!






php mongodb







share|improve this question














I'm developing a PHP application that stores a historical log in a MongoDB collection.



After 1 hour, these data are not important and are deleted by a CRON process that runs every hour.



The question is, is there any other solution to remove these documents automatically after a period of time since its insertion?



Thank you very much!






php mongodb




php mongodb






share|improve this question













share|improve this question











share|improve this question




share|improve this question










asked Feb 10 '14 at 23:44









HermetiCHermetiC

183




183













  • That's a very nice question +1

    – CesarTrigo
    Nov 15 '14 at 16:39



















  • That's a very nice question +1

    – CesarTrigo
    Nov 15 '14 at 16:39

















That's a very nice question +1

– CesarTrigo
Nov 15 '14 at 16:39





That's a very nice question +1

– CesarTrigo
Nov 15 '14 at 16:39












1 Answer
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To expire documents after a certain number of seconds, you can create a TTL index that is a special index property that relies on a background thread in mongod that reads the target index date values and performs delete operations on those who have expired.



To do this you will need a createdAt field that stores the insertion date in your log collection, for example you can use "new Date()”



To enable TTL for a collection use ensureIndex() method to create an index with the expireAfterSeconds additional property.



db.log.ensureIndex( { "createdAt": 1 }, { expireAfterSeconds: 3600 } )



This statement will create a TTL index and MongoDB will automatically delete documents from log collections when the createdAt value is older than the createdAt value + expireAfterSeconds value (3600 = 60secs * 60 mins).



The background task that removes expired documents runs every 60 seconds



I also recommend you to take a look to the following article that explains exactly the full process: http://mongodbspain.com/en/2014/02/08/expire-data-from-collections-using-ttl/



Regards.






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    To expire documents after a certain number of seconds, you can create a TTL index that is a special index property that relies on a background thread in mongod that reads the target index date values and performs delete operations on those who have expired.



    To do this you will need a createdAt field that stores the insertion date in your log collection, for example you can use "new Date()”



    To enable TTL for a collection use ensureIndex() method to create an index with the expireAfterSeconds additional property.



    db.log.ensureIndex( { "createdAt": 1 }, { expireAfterSeconds: 3600 } )



    This statement will create a TTL index and MongoDB will automatically delete documents from log collections when the createdAt value is older than the createdAt value + expireAfterSeconds value (3600 = 60secs * 60 mins).



    The background task that removes expired documents runs every 60 seconds



    I also recommend you to take a look to the following article that explains exactly the full process: http://mongodbspain.com/en/2014/02/08/expire-data-from-collections-using-ttl/



    Regards.






    share|improve this answer




























      2














      To expire documents after a certain number of seconds, you can create a TTL index that is a special index property that relies on a background thread in mongod that reads the target index date values and performs delete operations on those who have expired.



      To do this you will need a createdAt field that stores the insertion date in your log collection, for example you can use "new Date()”



      To enable TTL for a collection use ensureIndex() method to create an index with the expireAfterSeconds additional property.



      db.log.ensureIndex( { "createdAt": 1 }, { expireAfterSeconds: 3600 } )



      This statement will create a TTL index and MongoDB will automatically delete documents from log collections when the createdAt value is older than the createdAt value + expireAfterSeconds value (3600 = 60secs * 60 mins).



      The background task that removes expired documents runs every 60 seconds



      I also recommend you to take a look to the following article that explains exactly the full process: http://mongodbspain.com/en/2014/02/08/expire-data-from-collections-using-ttl/



      Regards.






      share|improve this answer


























        2












        2








        2







        To expire documents after a certain number of seconds, you can create a TTL index that is a special index property that relies on a background thread in mongod that reads the target index date values and performs delete operations on those who have expired.



        To do this you will need a createdAt field that stores the insertion date in your log collection, for example you can use "new Date()”



        To enable TTL for a collection use ensureIndex() method to create an index with the expireAfterSeconds additional property.



        db.log.ensureIndex( { "createdAt": 1 }, { expireAfterSeconds: 3600 } )



        This statement will create a TTL index and MongoDB will automatically delete documents from log collections when the createdAt value is older than the createdAt value + expireAfterSeconds value (3600 = 60secs * 60 mins).



        The background task that removes expired documents runs every 60 seconds



        I also recommend you to take a look to the following article that explains exactly the full process: http://mongodbspain.com/en/2014/02/08/expire-data-from-collections-using-ttl/



        Regards.






        share|improve this answer













        To expire documents after a certain number of seconds, you can create a TTL index that is a special index property that relies on a background thread in mongod that reads the target index date values and performs delete operations on those who have expired.



        To do this you will need a createdAt field that stores the insertion date in your log collection, for example you can use "new Date()”



        To enable TTL for a collection use ensureIndex() method to create an index with the expireAfterSeconds additional property.



        db.log.ensureIndex( { "createdAt": 1 }, { expireAfterSeconds: 3600 } )



        This statement will create a TTL index and MongoDB will automatically delete documents from log collections when the createdAt value is older than the createdAt value + expireAfterSeconds value (3600 = 60secs * 60 mins).



        The background task that removes expired documents runs every 60 seconds



        I also recommend you to take a look to the following article that explains exactly the full process: http://mongodbspain.com/en/2014/02/08/expire-data-from-collections-using-ttl/



        Regards.







        share|improve this answer












        share|improve this answer



        share|improve this answer










        answered Feb 10 '14 at 23:44









        CesarTrigoCesarTrigo

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