Lemmy Developer AMA and Dev Update, 2024-01-26, 1500 CEDT
Lemmy Developer AMA and Dev Update, 2024-01-26, 1500 CEDT
This is a chance for any users, admins, or developers to ask anything they'd like to myself, @nutomic@lemmy.ml , SleeplessOne , or @phiresky@lemmy.world about Lemmy, its future, and wider issues about the social media landscape today.
NLNet Funding
First of all some good news: We are currently applying for new funding from NLnet and have reached the second round. If it gets approved then @phiresky@lemmy.world and SleeplessOne will work on the paid milestones, while @dessalines and @nutomic will keep being funded by direct user donations. This will increase the number of paid Lemmy developers to four and allow for faster development.
You can see a preliminary draft for the milestones. This can give you a general idea what the development priorities will be over the next year or so. However the exact details will almost certainly change until the application process is finalized.
Development Update
@ismailkarsli added a community statistic for number of local subscribers.
@jmcharter added a view for denied Registration Applications.
@dullbananas made various improvements to database code, like batching insertions for better performance, SQL comments and support for backwards pagination.
@SleeplessOne1917 made a change that besides admins also allows community moderators to see who voted on posts. Additionally he made improvements to the 2FA modal and made it more obvious when a community is locked.
@nutomic completed the implementation of local only communities, which don't federate and can only be seen by authenticated users. Additionally he finished the image proxy feature, which user IPs being exposed to external servers via embedded images. Admin purges of content are now federated. He also made a change which reduces the problem of instances being marked as dead.
@dessalines has been adding moderation abilities to Jerboa, including bans, locks, removes, featured posts, and vote viewing.
In other news there will soon be a security audit of the Lemmy federation code, thanks to Radically Open Security and NLnet.
Support development
@dessalines and @nutomic are working full-time on Lemmy to integrate community contributions, fix bugs, optimize performance and much more. This work is funded exclusively through donations.
If you like using Lemmy, and want to make sure that we will always be available to work full time building it, consider donating to support its development. Recurring donations are ideal because they allow for long-term planning. But also one-time donations of any amount help us.
- Liberapay (preferred option)
- Open Collective
- Patreon
- Cryptocurrency
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Regarding server architecture - How many users can the Lemmy network, or the fediverse as a total scale to, assuming the average person posts once per day and reads ~50 comments/posts a day?
Lemmy supports horizontal scaling, so in theory it is only limited by the amount of servers you can afford. Of course there are always unpredictable bottlenecks which need to be fixed, but no inherent limitation.
The ActivityPub protocol lemmy uses is (in my opinion) really bad wrt scalability. For example, if you press one upvote, your instance has to make 3000 HTTP requests (one to every instance that cares).
But on the other hand, I recently rewrote the federation queue. Looking at reddit, it has around 100 actions per second. The new queue should be able to handle that amount of requests, and PostgreSQL can handle it (the incoming side) as well.
The problem right now is more that people running instances don't have infinite money, so even if you could in theory host hundreds of millions of users most instances are limited by having a budget of 10-100$ per month.
In the future it could make sense to make a protocol extension to send multiple activities in a single HTTP connection. But for now its probably not worth the effort, considering that it would break compatibility with other Fediverse platforms.