In CouchDB and Cloudant, when documents are changed, the database holds on to previous versions. What gets kept, and for how long?
How many document revisions are kept in CouchDB / Cloudant, and for how long?
1k Views Asked by garbados At
1
There are 1 best solutions below
Related Questions in COUCHDB
- Sort continents by amount of countries
- SImple reduce function is not working, what is wrong with my reduce function code in couchDB?
- Do 'reduce' with results from Cloudant search?
- DB candidate as CouchDB/Schema replacement
- CouchDB sum by date range and type
- Couchdb View does not re-index
- Retrieve data without _id and _ref from coucgdb
- How do I get rid of unused views on CouchDB using futon?
- Using node-couchdb to query a database
- Import data from CouchDB to Sql Server
- Architecture of an app when using CouchDB/PouchDB
- How to create and maintain couchDB/pcouchDB doc _id's
- How do I query X specific documents all at once using an index with pouchdb?
- Installing CouchDB on IaaS?
- Download file, retrieved from port on the local server
Related Questions in CLOUDANT
- Do 'reduce' with results from Cloudant search?
- node.js processing a form with Node.js Cloudant DB Web Starter
- How to write query to my Cloudant database?
- How can I tell if my SDP process is still running the 'initial' load?
- how to 'flatten' the table in dashDB created by the schema discovery process (SDP)?
- How can I debug problems with warehouse creation?
- How to get a "fieldcount" (like wordcount) on CouchDB/Cloudant?
- SQLCODE=-911 : "warehouser_error_message": "File <<filename>>.csv.zip could not be loaded due to an exception in dashDB
- Installing package R4CouchDB version 0.5.1 on R 3.1
- DashDB sync with Cloudant doesn't work
- dashdb out of memory on Cloudant sync
- JSON data not uploading to database
- Is it possible to dynamically add views in cloudant (couchdb) through node.js using nano
- Expire documents in Cloudant
- Cloudant Database Map Reduce
Related Questions in MVCC
- a test about mysql innodb mvcc
- Questions about how MVCC dealing with multiple rows
- How does Postgres atomically updates secondary indices?
- MySQL ReadView bug?
- why plain select has Lock_time?
- Changin DB transaction control in flyway with hsql
- Mysql InnoDB row locking from read
- Stable pagination using Postgres
- Default Concurrency Control Implementation in MySQL
- PostgreSQL - MVCC (multi-version concurrency control) - When is actual lock acquired?
- What does ANALYZE do when used within a transaction?
- Why PostgreSQL indexes do not contain visibility information?
- High level Postgres run down of INSERT/UPDATE speed?
- Why does MVCC require locking for DML statements
- Performance impact of mvcc, vector clocks, locks?
Trending Questions
- UIImageView Frame Doesn't Reflect Constraints
- Is it possible to use adb commands to click on a view by finding its ID?
- How to create a new web character symbol recognizable by html/javascript?
- Why isn't my CSS3 animation smooth in Google Chrome (but very smooth on other browsers)?
- Heap Gives Page Fault
- Connect ffmpeg to Visual Studio 2008
- Both Object- and ValueAnimator jumps when Duration is set above API LvL 24
- How to avoid default initialization of objects in std::vector?
- second argument of the command line arguments in a format other than char** argv or char* argv[]
- How to improve efficiency of algorithm which generates next lexicographic permutation?
- Navigating to the another actvity app getting crash in android
- How to read the particular message format in android and store in sqlite database?
- Resetting inventory status after order is cancelled
- Efficiently compute powers of X in SSE/AVX
- Insert into an external database using ajax and php : POST 500 (Internal Server Error)
Popular Questions
- How do I undo the most recent local commits in Git?
- How can I remove a specific item from an array in JavaScript?
- How do I delete a Git branch locally and remotely?
- Find all files containing a specific text (string) on Linux?
- How do I revert a Git repository to a previous commit?
- How do I create an HTML button that acts like a link?
- How do I check out a remote Git branch?
- How do I force "git pull" to overwrite local files?
- How do I list all files of a directory?
- How to check whether a string contains a substring in JavaScript?
- How do I redirect to another webpage?
- How can I iterate over rows in a Pandas DataFrame?
- How do I convert a String to an int in Java?
- Does Python have a string 'contains' substring method?
- How do I check if a string contains a specific word?
Cloudant and CouchDB keep the document's metadata forever (id, rev, deleted and conflict). Document contents are deleted during compaction (automatic in Cloudant, manual in CouchDB), with one exception: in the case of a conflict, we'll keep the document contents until the conflict is resolved.
For each document, we keep the last X revisions, where X is the number returned by
{username}.cloudant.com/{db}/_revs_limit, defaulting to 1000. Revisions older than the last 1000 get dropped. You can change_revs_limitby making a PUT request with a new value to that endpoint. For example:So, if a document is replicated to two nodes, edited 1001 times on node A, and then replicated again to node B, it will generate a conflict on node B (because we've lost the information necessary to join the old and new edit paths together).