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Lemmy World outages (lemmy.world)
submitted 1 year ago* (last edited 1 year ago) by lwadmin@lemmy.world to c/lemmyworld@lemmy.world

Hello there!

It has been a while since our last update, but it's about time to address the elephant in the room: downtimes. Lemmy.World has been having multiple downtimes a day for quite a while now. And we want to take the time to address some of the concerns and misconceptions that have been spread in chatrooms, memes and various comments in Lemmy communities.

So let's go over some of these misconceptions together.

"Lemmy.World is too big and that is bad for the fediverse".

While one thing is true, we are the biggest Lemmy instance, we are far from the biggest in the Fediverse. If you want actual numbers you can have a look here: https://fedidb.org/network

The entire Lemmy fediverse is still in its infancy and even though we don't like to compare ourselves to Reddit it gives you something comparable. The entire amount of Lemmy users on all instances combined is currently 444,876 which is still nothing compared to a medium sized subreddit. There are some points that can be made that it is better to spread the load of users and communities across other instances, but let us make it clear that this is not a technical problem.

And even in a decentralised system, there will always be bigger and smaller blocks within; such would be the nature of any platform looking to be shaped by its members. 

"Lemmy.World should close down registrations"

Lemmy.World is being linked in a number of Reddit subreddits and in Lemmy apps. Imagine if new users land here and they have no way to sign up. We have to assume that most new users have no information on how the Fediverse works and making them read a full page of what's what would scare a lot of those people off. They probably wouldn't even take the time to read why registrations would be closed, move on and not join the Fediverse at all. What we want to do, however, is inform the users before they sign up, without closing registrations. The option is already built into Lemmy but only available on Lemmy.ml - so a ticket was created with the development team to make these available to other instance Admins. Here is the post on Lemmy Github.

Which brings us to the third point:

"Lemmy.World can not handle the load, that's why the server is down all the time"

This is simply not true. There are no financial issues to upgrade the hardware, should that be required; but that is not the solution to this problem.

The problem is that for a couple of hours every day we are under a DDOS attack. It's a never-ending game of whack-a-mole where we close one attack vector and they'll start using another one. Without going too much into detail and expose too much, there are some very 'expensive' sql queries in Lemmy - actions or features that take up seconds instead of milliseconds to execute. And by by executing them by the thousand a minute you can overload the database server.

So who is attacking us? One thing that is clear is that those responsible of these attacks know the ins and outs of Lemmy. They know which database requests are the most taxing and they are always quick to find another as soon as we close one off. That's one of the only things we know for sure about our attackers. Being the biggest instance and having defederated with a couple of instances has made us a target.  

"Why do they need another sysop who works for free"

Everyone involved with LW works as a volunteer. The money that is donated goes to operational costs only - so hardware and infrastructure. And while we understand that working as a volunteer is not for everyone, nobody is forcing anyone to do anything. As a volunteer you decide how much of your free time you are willing to spend on this project, a service that is also being provided for free.

We will leave this thread pinned locally for a while and we will try to reply to genuine questions or concerns as soon as we can.

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[-] eek2121@lemmy.world 2 points 1 year ago

Have you guys contacted law enforcement? It may surprise you. A startup I worked for had the same issue and contacted the FBI. They were able to quickly (within hours) find the person doing it despite him using VPNs and other tools for OpSec.

[-] Lemmylefty@lemmy.world 0 points 1 year ago

I’d imagine that there are a lot of users and communities on here that want law enforcement as far away from the Fediverse as possible…

[-] gabe@literature.cafe 0 points 1 year ago* (last edited 1 year ago)

The risk that would create for vulnerable communities on here would be deeply irresponsible.

[-] glorious_albus@lemmy.world 0 points 1 year ago

Right. Because FBI doesn't already monitor any suspicious activity.

[-] gabe@literature.cafe 1 points 1 year ago

They fuck with left leaning groups and try to intentionally destabilize them 🤷‍♂️

[-] Lemmylefty@lemmy.world 2 points 1 year ago

In all seriousness, we all appreciate your work. These are the growing pains that are to be expected, and your hard work and transparency (and writing it up at a level that even I can understand) is welcome.

[-] nix@merv.news 1 points 1 year ago

I think it would be good to not close registration and if once a month or something there could be a post by admins about migrating to smaller instances (this is made easy with the LASIM tool) so new users can easily sign up with no hurdle but we also prevent too much centralization.

[-] miles@lemmy.world 1 points 1 year ago* (last edited 1 year ago)

a better solution is to decouple the query from individual api requests by adding a caching layer. we’ll get there eventually

[-] Fish@midwest.social 1 points 1 year ago

I have nothing bad to say about Lemmy.world, but I do recommend that people move away from it in order to better decentralize Lemmy. Here is some useful information for people wanting to move instances.

For a list of instances, along with with stats for those instances:

https://fedidb.org/software/lemmy or https://lemmyverse.net/

Also, tools for migrating instances:

https://github.com/CMahaff/lasim (easy) - Latest Version Download (just select your OS type and run the program)

https://github.com/wescode/lemmy_migrate

https://github.com/Ac5000/lemmy_account_sync

Decentralized lemmy verse are definitely something to aim for. It is essential for the concepts and ensures diverse communities which aren't dominated by admin ideas and regional bias.

[-] Rottcodd@kbin.social 1 points 1 year ago

Ironic that they're effectively proving that you were right to not trust them...

[-] thisbenzingring@lemmy.sdf.org 1 points 1 year ago

I think I initially signed up on your instance and then figured it out, signed up for a more local instance but then figured I made a mistake and ended up where I am.

Thank you again for being available to let me through the door. Once I figured out that there's lots of doors, it was much better.

Lemmy.world will always be a special place and you and anyone who volunteers for work hare is fuckin awesome. Thanks again ♥️

[-] CanadianCorhen@lemmy.ca 1 points 1 year ago

I would love to see this grow to the point where a full time sysadmin could be hired! Would need a lot of subscribers though

[-] SloppyPuppy@lemmy.world 1 points 1 year ago* (last edited 1 year ago)

Im a data engineer with 20+ years of experience in sql and various databases, I do performance tuning on daily basis. How can I help? Please message me if you think you can use me. Id be very happy to help where I can!

[-] TheSmartDude@lemmy.world 1 points 1 year ago

Will these occur in the near-future?

[-] EatMyDick2@lemmy.world 0 points 1 year ago

I hope you reported this to the FBI so they can investigate this group, all too often you find people who commit cyber attacks and are never prosecuted for their crime because no one filed a report. With any luck they'll get a lengthy prison sentence and learn what the real world is like outside of the digital realm scrubbing toilets with a toothbrush.

[-] elbarto777@lemmy.world 0 points 1 year ago

Did you not read the post?

[-] deftdrummer@lemm.ee 0 points 1 year ago

Interesting your comparison with "imagine if a new user got to the page and couldn't sign up" - honestly, that's what they're faced with now regardless of closing off sign ups.

You say being able to handle the load is not an issue - I understand that on a technical level, but at the same time, you can't handle the load currently with the level of ddos attacks. That much is fact.

I know it's hard to catch these fuckers and close exploits quickly, but let's be honest here so far the methods have failed on LW's part. These are 2010 levels of downtime.

[-] PeachMan@lemmy.world -1 points 1 year ago

You just answered your own question? Lmao

[-] fkn@lemmy.world -1 points 1 year ago

Question, can we configure the nginx to return cached responses for all non-logged in queries for predetermined periods of time? (1min for example?)

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this post was submitted on 09 Aug 2023
1737 points (97.0% liked)

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