Talk:MongoDB

Name
says "from humongous" but I think it may also be a reference to Blazing Saddles. wow it's good 173.164.238.54 (talk) 18:42, 21 December 2010 (UTC)


 * Independent of where the name comes from, "Mongo" is a four-letter word in some parts of the world, e.g. Germany. A very rude, very politically incorrect one. It means retard/idiot by associating someone with Down's Syndrom. Shows that 10gen didn't do much due diligence when selecting the name - "We are now using the IdiotDB" isn't something you want to tell your boss. 93.129.21.179 (talk) —Preceding undated comment added 09:21, 1 January 2013 (UTC)
 * This isn't unique to Germany, it's why the retarded character in Blazing Saddles is named so in the first place. 10gen were almost certainly aware of the connotations, but that might have been before they realised how big it was going to get.Johnny &#34;ThunderPeel2001&#34; Walker (talk) 18:15, 10 February 2018 (UTC)
 * Do you have any references to that use? As a native German who lived in 3 states (NRW, NI, BY), I've never heard that use before, and there are no references on duden.de or dict.leo.org. Also, even if it is, I believe this comment to be irrelevant to the Wikipedia article itself, and so would be happy if both comments could be removed. — Preceding unsigned comment added by 134.191.221.72 (talk) 14:38, 2 September 2013 (UTC)
 * It has the same meaning in English: http://en.wiktionary.org/wiki/mong#Noun_3 (and this http://web.archive.org/web/20070320214418/http://www.bbc.co.uk/ouch/yourspace/worstwords/, which rated it the 4th most offensive disability-based insult in the UK). 80.229.142.250 (talk) 22:32, 20 November 2013 (UTC)
 * You are probably too young or too well educated to have it heard in use. It took decades to eradicate it from widespread usage together with changing from using the term mongolism to Down's Syndrome. See, for example the TV series Unser Walter Unser Walter http://de.wikipedia.org/wiki/Unser_Walter. The modern version of the insult is to call someone "behindert". (leaving it to the bot to sign this).


 * just want to add, Mongo has the same (negative) meaning both in Norwegian and Swedish, and "Down's syndrome" / "Edwards syndrom" were both called "mongolisme" in the past (both in norwegian and swedish).


 * Isn't 'Mongo' also the name of Ming the Merciless's home planet in Flash Gordon? — Preceding unsigned comment added by 86.130.121.84 (talk) 13:57, 7 June 2016 (UTC)

Single-Server Durability
I think the article would benefit from having a brief overview of the issues around MongoDB's lack of single-server durability. --Aimaz (talk) 09:23, 13 January 2011 (UTC)
 * As of version 1.8.0, MongoDB does have single-server durability.Beaddy1238 16:07, 13 May 2011 (UTC) —Preceding unsigned comment added by Beaddy1238 (talk • contribs)
 * See . Removing lack of single server durability from article. Ochbad (talk) 01:37, 12 July 2011 (UTC)

The current linked criticism is from a competitor (who hid his commercial interest in a competing product Hyperdex when blogging this) and is also technically inaccurate). ^ Broken by Design: MongoDB Fault Tolerance is written by author of Hyperdex.

I'm putting some note of the fact back in. The default WriteConcern dropped acknowledged writes on the floor in case of a single client failure for the first five years of the software's release. The "SAFE" WriteConcern still drops acknowledged writes on the floor in case of a single server failure, or at least it did last year. I think Emin Gün Sirer's writeup hits the relevant technical points in a clear way. It also contains a lot of flames; if you can find a better writeup of the issues with MongoDB and durability, please do cite them. grendel|khan 01:28, 18 April 2014 (UTC)


 * I don't know who left the comment preceding Grendel's. If it was 203.99.208.3, who left lots of comments on this talk page, he has an IP registered to Cognizant Technology Solution (India) per Wikipedia, so it is silly to be claiming that Emin Gün Sirer has a competitive interest due to Hyperdex. He's at Cornell and has oodles of things he's working on, you know how those academics are. I agree with Grendel, that it would be great to get add'l sources, especially some that aren't primary. This article has far too many references to Mongodb documentation, often the same page, under different headings! I hope there's no reference to Mongodb being "web scale" based on that parody video! I can't stop laughing, just thinking about it!--FeralOink (talk) 19:33, 27 April 2014 (UTC)

Performance information request
Is there a reliable, third-party source that can provide some valid information about Mongo's actual performance? How does it relate and scale compared to widespred solutions like MySQL and other NoSQL databases? --IP 22:45, 7 July 2011 (UTC) — Preceding unsigned comment added by 86.56.90.168 (talk)

Timeless Specifics
There's a handful of sections that I thought were TOO detailed; specifically they listed things that will change over time, and it's not clear that this article will be updated to keep up. (even if YOU think that YOU will do it when the time comes.) These sections:
 * Language support
 * Monitoring
 * GUIs

for instance, Monitoring lists some current plugins. fine, but each is an independent project and at least one of the projects will run out of steam over the years; and at least one more, probably many, new plugins will show up. WP is not the place for these details; the Mongo group should maintain lists of what other attachable software is in what status, on their own site (or wherever it is, sourceforge or github...).

Instead of these complete lists, with meticulous links, you should just list a handful of the more prominent examples and refer people to Mongo's website for full details. EG language support. It's written in C++ so list C++; the mongo group would never give up that one no matter how threadbare they become. Then toss in a few server languages - those most likely to be used like PHP and Java. Then say "and, as of Sept 2011, about two dozen other languages". The detailed information should be in one place: the Mongo website and anybody interested can and should go there. What languages Mongo supports 10 years from now, will probably be different, and in fact Mongo might be gone by then, and there'll be nobody to update this page. So think of the future and make the page timeless.

OsamaBinLogin (talk) 02:48, 23 September 2011 (UTC)

Drive-by tagging
TO THE GUY WHO IS PUTTING unnecessary tags: you're putting SEVEN tags on the article without providing any concrete reason. First time, you did not provide any reason. Second time, you said "definitely overbloated and its tone is highly inappropriate", without actually specifying how does that related to SEVEN different tags?


 * It needs additional citations for verification. - article has SEVENTY-FIVE citations
 * It is written like an advertisement and needs to be rewritten from a neutral point of view. - Give me a SINGLE sentence that's written like an advertisement.
 * It contains instructions, advice, or how-to content. - The article has NOT A SINGLE SENTENCE which is instruction or how-to or advice.
 * It may contain original research. - article has 75 citations and NEARLY EVERY SENTENCE is cited
 * It may contain an excessive amount of intricate detail that may only interest a specific audience. - WHICH part? All the sections are necessary to describe a database software.
 * It may contain wording that merely promotes the subject without imparting verifiable information. - WHICH senentence promotes the subject? Also, why are you putting both advert and promotion tags?
 * It may be too technical for most readers to understand. Please help make it understandable to non-experts. WHICH part?

This is classic example of trying to defame the subject of the article using drive-by tagging without actually making any effort to improve the article. 203.99.208.3 (talk) 05:51, 9 February 2012 (UTC)


 * Now you're removing comments from talk pages. This is ridiculous. 203.99.208.3 (talk) 05:58, 9 February 2012 (UTC)


 * MUltiple times, wow. NOBODY is opposed to tags. but if you put 7 tags, give a reason. This is arm twisting tactic of yours and censoring of others opinons. 203.99.208.3 (talk) 06:04, 9 February 2012 (UTC)

WHY can't you selective tag sentences or remove content or post talk page comments instead of defacing the article? 203.99.208.3 (talk) 06:09, 9 February 2012 (UTC)
 * I'm not evil. Let me address the tags one by one:

It's plain obvious.Jasper Deng (talk) 06:10, 9 February 2012 (UTC)
 * 1) The total doesn't matter. There are still unsourced statements.
 * 2) The article is just a features list.
 * 3) Describing how things occur may make this too much like a manual.
 * 4) Some things seem to have been only found out by users.
 * 5) Not everyone is a database admin.
 * 6) I see lots of "MongoDB supports" etc. sentences; it's just excess.
 * 7) Not everyone uses JS.


 * 1) Then tag unsourced statements.
 * No, it's not. And even if it was, that's not the reason for putting up an advert or promotion tag. Go read the guidelines first.
 * 1) No it doesn't. Otherwise, half of techncial wikipedia articles would be "manuals".
 * 2) Which things?
 * 3) Agreed. What has it got to do with this discussion, though?
 * No, it's not if MongoDB indeed supports these features.
 * 1) Agreed.  What has it got to do with this discussion, though?

It's still not obvious why SEVEN tags are necessary. I have repeated this point mutlipile times - RELEVANT tags are not a problem neither are sentence-wise tags. but SEVEN tags reflect insecurity of MS shills. 203.99.208.3 (talk) 06:31, 9 February 2012 (UTC) Jasper Deng (talk) 06:51, 9 February 2012 (UTC)
 * 1) The presence of a lot of statements with this tag or needing this tag makes this easier
 * 2) At least 70% of the article is about the features, with the non-features part mainly being the uses and the intro.
 * 3) The other technical articles also discuss, rather the simply giving syntax and how-things-work.
 * 4) "more commonly installed from binary packages" - among others.
 * 5) Not everyone needs the detail of how MongoDB works. The average Joe knows nothing about this.
 * 6) Let's try to vary our language.
 * 7) You need to know JS to understand the example(s). Otherwise it's too nerdy to the reader.

Dear Jasper, Sorry. This was part of a research I'm doing on how seriously are anon users' opinions taken on Wikipedia. I'm trying this from different IP addresses on different pages with different combinations (personal attacks, semi-uncivil, civil comments, reasonable comments, irrelevant arguments, spelling/grammar mistakes etc.) This was the "semi-uncivil with spelling/grammar mistakes" category of experiment, and is now over. I apologize if you were hurt during the experiment. 203.99.208.3 (talk) 06:45, 9 February 2012 (UTC)

Wikipedia is an online encyclopedia
"The developer's application must know that it is talking to a sharded cluster when performing some operations. For example, a "findAndModify" query must contain the shard key if the queried collection is sharded". Can someone please explain what gobbledygook like this is doing on Wikipedia? AndyTheGrump (talk) 06:28, 9 February 2012 (UTC)

Nice point. Removing it. 203.99.208.3 (talk) 06:31, 9 February 2012 (UTC)


 * And while you are at it: "Replica sets are similar to master-slave, but they incorporate the ability for the slaves to elect a new master if the current one goes down". While I'm sure that this feature would appeal to Toussaint Louverture, I'm not sure that it is encyclopaedic. Or intelligible... AndyTheGrump (talk) 06:37, 9 February 2012 (UTC)


 * Please remove it yourself. I was performing an experimenting, as explained above. 203.99.208.3 (talk) 06:46, 9 February 2012 (UTC)


 * What's the problem here? Those sentences look ok to me.  The first one says that the application programmer has to keep track of (or recompute) shard keys when using a sharded MongoDB, as opposed to having MongoDB handle this itself.  IIRC, Cassandra doesn't make the programmer manage shard keys by hand, so if anything I'd have liked more explanation added of why MongoDB does what it does, not have the info removed.  The second one describes a failover mechanism and is also good info. Andy, do you understand anything about the article that you're criticizing?  It is about a program used exclusively by software developers (it has no end-user interface like MS Access), as a component of larger applications that they deliver to end users.  As such, its intended audience is primarily developers and to be informative to that audience, it has to include technical details of interest even if those aren't always comprehensible to non-programmers.  It's similar to how a solid article on quantum mechanics will necessary assume some physics background.  The accepted approach to such articles has generally been that there should be a lede paragraph/introduction aimed at non-specialist audiences, that says generally what the subject matter is about, but after that it is fine to go into technical detail. Andy's comments on this article (here and at ANI) therefore come across to me as unhelpful, since as a programmer and occasional (non-expert) MongoDB user, I found the material Andy complains about to be relevant and informative (maybe the writing could be touched up a bit).  In particular, people reading the article are quite likely comparing MongoDB to other NoSQL databases like Cassandra and Riak, so bringing out the unique characteristics of each db (such as their approaches to sharding and failover) in the articles is exactly the right thing to do.  Removing the info does a disservice to our readers.  So I'm planning to restore the removed info after checking it against the software docs or the O'Reilly book, to make sure the info was correct.  67.117.145.9 (talk) 11:57, 10 February 2012 (UTC)


 * "Wikipedia is not a manual, guidebook, textbook, or scientific journal": WP:NOTMANUAL. If software developers want to find out about the detailed inner workings of the DB, they can look in "the software docs or the O'Reilly book". In fact, any software developer using Wikipedia to find that sort of information should probably find another job. Any comparisons between this software and similar material should be made with the minimum jargon necessary - and that jargon needs explanation. AndyTheGrump (talk) 14:56, 10 February 2012 (UTC)
 * Andy, those sections in question don't explain how to use the mentioned features of MongoDB like a manual would. They just summarize what the features are and what they do, so the reader can refer to the manual for details.  That is exactly what the article should cover.  I agree that the writing could be improved a bit (wrt jargon) but that's a fairly minor issue in my opinion.  I don't find your theories about where developers should look for info to be persuasive.  They look for info where they can find it, and if something looks useful and relevant and checks out when they look into it further, it is useful. 67.117.145.9 (talk) 02:59, 11 February 2012 (UTC)

Web Scale
The only claims to MongoDB being "Web scale" and "Scales right up" are from a satirical video. — Preceding unsigned comment added by Twimoki (talk • contribs) 17:36, 26 May 2012 (UTC)

Database Logic
swirl — Preceding unsigned comment added by Hendraimz (talk • contribs) 06:56, 25 August 2012 (UTC)

Main Features . Load balancing
When speaking about sharding, the article says "The data is split into ranges (based on the shard key) and distributed across multiple shards.". However, as can be seen at docs.mongodb.org/manual/core/sharding-introduction/, a hash based sharding (so not only range based sharding) can be used. This point is quite important if someone is trying to evaluate MongoDB by reading the article, as a range based sharding is not quite useful for some needs ;) — Preceding unsigned comment added by 62.32.231.213 (talk) 09:17, 23 January 2014 (UTC)

Is a dual licensing business model
As expressed in the article, "in addition" (to AGPL) "MongoDB Inc. offers proprietary licenses for MongoDB". So, article must be explicit: it is a dual licensing business model... or not? --Krauss (talk) 13:22, 23 September 2015 (UTC)

Big Data
Could anyone expand on MongoDB for BigData? I came across this "The MongoDB NoSQL database can underpin many Big Data systems, not only as a real-time, operational data store but in offline capacities as well. With MongoDB, organizations are serving more data, more users, more insight with greater ease — and creating more value worldwide. Read about MongoDB's big data use casesto learn more. Selecting the right big data technology for your application and goals is important. MongoDB, Inc. offers products and services that get you to production faster with less risk and effort. Learn more or contact us." but I personally have no experience and was surprise to not find any info on Wikipedia.

Faulty citations
I'm new to wikipedia, just want to bring it to your attention. Citation #27 (MongoDB queries don’t always return all matching documents!) is dead. I can't find a replacement, so I dunno what the fix is. Have a good day. — Preceding unsigned comment added by 75.138.232.95 (talk) 01:14, 8 February 2017 (UTC)

Typical uses
I would like there to be a section on the typical uses of this database. There are a ton of different NoSQL databases with wildly varying characteristics, not every database is suitable for a given application. 82.199.182.97 (talk) 11:30, 17 April 2017 (UTC)

Open-source?
Since mongodb changed to a new license called SSPL which isn't considered open source by anyone but MomgoDB itself, shouldn't the part "MongoDB is a free and open-source" changed to "MongoDB is a free" in the first sentence? The MongoDB CTO announced they will change the license, because the current SSPL has very slow chances to ever be OSI approved.

Until MongoDB is again licensed with a license approved by OSI, it cannot be considered open source. 213.147.166.182 (talk) 00:56, 17 November 2018 (UTC)
 * "free" has a widely used meaning when referring to software that MongoDB no longer matches; you could at most call it "gratis". -KiloByte (talk) 09:15, 30 November 2018 (UTC)
 * Also, Red Hat has already dropped MongoDB while Debian so far carries a still-free version, but I expect it'll drop it before Buster. -KiloByte (talk) 09:18, 30 November 2018 (UTC)
 * While MongoDB being open source is certainly up for debate, I don't think the current wording ("used to be free and open-source but has since changed to a proprietary license") reflects this ambiguity. But, I'm not really sure I have the full picture: is SSPL really considered proprietary? Also, is it agreed that the OSI defines what is open source? Lustrousstasia (talk) 23:59, 30 November 2018 (UTC)
 * Here's an official statement from the Debian Project Leader about SSPL being unfit for Debian: . I also think it'd be good to revert the recent edit by Semanticman as a free software project becoming non-free is a very notable piece of information. -KiloByte (talk) 09:58, 5 December 2018 (UTC)
 * MongoDB is currently released under SSPLv1. SSPLv1 has been withdrawn from the OSI Approval process in lieu of SSPLv2: . It might happen that SSPLv2 is approved by OSI as Open-Source (very unlikely). It might happen that a later version of SSPL is approved by OSI. If that happens, it might happen that MongoDB is relicensed to that new license. But currently, it is clear that MongoDB isn't Open-Source. Anybody (talk) 13:06, 6 December 2018 (UTC)
 * Some people think "open source" is synonymous with "OSI-certified", others disagree. (For example, see this discussion.) The article mentions that the SSPL has not been OSI-certified, and it should probably explain why that is problematic, but I didn't find any reliable sources about that, only postings on mailing lists and message boards. Without reliable sources, it would be wrong for the article to say MongoDB is "not open source" or "not free". -- Chrisahn (talk) 19:04, 29 December 2018 (UTC)
 * This article by The Register contains a few quotes about some problematic aspects of SSPL, but they're a bit vague. I didn't find anything that would clearly benefit this article. -- Chrisahn (talk) 19:56, 29 December 2018 (UTC)
 * These two OSI mailing list summaries contain several quotes that may be useful for the article. They're from mailing lists, so still no WP:RS, but I guess if we clearly mark them as opinions they should be OK, e.g. stuff like "Eric Schultz feels the revision has not been made in good faith". Caveat: I think we should pick quotes from people who are in some sense relevant. Ideally someone who has a Wikipedia article. -- Chrisahn (talk) 03:12, 10 January 2019 (UTC)

SSPL has been withdrawn from the OSI approval process. See the mailing list. Anybody (talk) 12:03, 22 March 2019 (UTC)

Needs more info on Cloud providers and Replication
This page could do with a bit of info on the cloud vendors that offer MongoDB-as-a-Service via proxy (Cosmos DB and Amazon DynamoDB are two known ones). I also added info about the arbiter, which is a crucial detail when using mongodb in distributed settings. Avindra talk 21:44, 9 April 2021 (UTC)

Transactions
The article currently states:
 * MongoDB claims to support multi-document ACID transactions since the 4.0 release in June 2018. This claim was found to not be true as MongoDB violates snapshot isolation.

This comment refers to an external analysis of MongoDB 4.2.6. Since then, MongoDB has acknowledged some bugs that caused this behaviour and issued fixes in 4.2.8 and 5.0.

As a company employee I do not want to update the article directly, but can I request someone use this reference to update this section to be more accurate? 121.44.247.140 (talk) 07:13, 20 October 2021 (UTC)

Features section reads like an ad
Just like one big ad.

[ Wikimedia Foundation and its user community agree by publishing of this text and of my IP, to unrestricted financial compensation (which may be directed to the Electronic Frontier Foundation) for stress and other consequences due to privacy infringement by its needless publicising of my IP, and further agrees to remove all such publicised IPs from its pages efficiently and promptly, and without further adue.]

Edit request for paragraph about Jepsen on 4 August 2023

 * Change "Although MongoDB claims" to "Although MongoDB originally claimed"
 * Change  to
 * Add "MongoDB later fixed the bugs and amended the article to note the analysis by Jepsen" to the end of the paragraph. (I don't think this needs a citation, but if not another one can be made linking to the current version of the MongoDB Jepsen page)

(Also, why is this article even still semi-protected? But anyway) Signing Off, 99.146.242.37 (talk) 12:59, 4 August 2023 (UTC)


 * Pictogram voting wait blue.svg In progress: An editor is implementing the requested edit. Xan747 ✈️ 🧑‍✈️ 21:10, 4 August 2023 (UTC)
 * The detail and precision are there but arguably there is too much for an issue that is now seven years behind us on a version (4.2.8) that was EOL on April 2023, over half a year ago.  The problem with such detailed information is that it is way too easy to accidentally (or otherwise) capture/copy it without date context.  To this date (Nov 2023) the community still hears echoes of "MongoDB does not have ACID transactions."
 * I believe some editing and strong date-context would be appropriate. Buzzm (talk) 15:58, 20 November 2023 (UTC)

✅ with substantial rewrites and additions: In an undated article entitled "MongoDB and Jepsen" (archived May 8, 2020), MongoDB said that version 3.6.4 had passed "the industry's toughest data safety, correctness, and consistency tests" by Jepsen, and that, "MongoDB offers among the strongest data consistency, correctness, and safety guarantees of any database available today." On April 30, Jepsen, which describes itself as a "distributed systems safety research company", disputed both claims on Twitter, saying, "In that report, MongoDB lost data and violated causal by default." In its May 15 report on MongoDB version 4.2.6, Jepsen wrote that MongoDB had only mentioned tests that version 3.6.4 had passed, and that version had 4.2.6 introduced more problems. Jepsen's test summary reads in part: "Jepsen evaluated MongoDB version 4.2.6, and found that even at the strongest levels of read and write concern, it failed to preserve snapshot isolation. Instead, Jepsen observed read skew, cyclic information flow, duplicate writes, and internal consistency violations. Weak defaults meant that transactions could lose writes and allow dirty reads, even downgrading requested safety levels at the database and collection level. Moreover, the snapshot read concern did not guarantee snapshot unless paired with write concern majority—even for read-only transactions. These design choices complicate the safe use of MongoDB transactions."

On May 26, Jepsen updated the report to say, "MongoDB identified a bug in the transaction retry mechanism which they believe was responsible for the anomalies observed in this report; a patch is scheduled for 4.2.8." As of June 10, 2023, the "MongoDB and Jepsen" page said the issue had been patched as of that version, and that, "Jepsen criticisms of the default write concerns have also been addressed, with the default write concern now elevated to the majority concern (w:majority) from MongoDB 5.0."

I relied quite heavily, but not entirely, on the primary sources. I also removed text that was a direct copypasta of the secondary source without properly attributing it as a direct quote. Feel free to ping me with suggestions for any further revisions. Xan747 ✈️ 🧑‍✈️ 22:33, 4 August 2023 (UTC)


 * Wonderful, this is a much better edit than I was proposing &mdash; thanks! [ 99.146.242.37 (talk) 06:11, 11 August 2023 (UTC) ]
 * You're welcome. It was my pleasure. Xan747 ✈️ 🧑‍✈️ 10:58, 11 August 2023 (UTC)
 * Apols; I replied in the wrong section.  Please see my reply and concerns above. Buzzm (talk) 15:59, 20 November 2023 (UTC)

Logo outdated
I just wanna notify that the logo in the infobox is outdated. I wanna renew it by uploading the new version, but my account is not yet auto confirmed. As reference, you can see the new logo here on Wikipedia bahasa Indonesia. Thanks. ZanzibarSailor (talk) 12:24, 24 September 2023 (UTC)

Semi-protected edit request on 10 July 2024
Change stable version to 7, source: https://www.mongodb.com/blog/post/chicago-event-marks-general-availability-mongodb-version-7-0, https://www.mongodb.com/docs/manual/release-notes/7.0/ Marcin.wosinek (talk) 08:48, 10 July 2024 (UTC)

✅ This value is stored at WikiData, not directly on the Wikipedia page. I set the most recent Wikidata version to "preferred," but it seems there are actually a few minor versions after that one that could be added. PianoDan (talk) 17:14, 10 July 2024 (UTC)