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List of popular Lemmy communities and their alternatives
cross-posted from: https://sopuli.xyz/post/247640 > Just by checking https://lemmy.ml/communities one can see the most popular communities of lemmy.ml. The plan here is to list all the alternatives for those from other instances. One can also suggest alternatives to be added here and I update this living document. > > * [Linux](https://lemmy.ml/c/linux) --> [!linux@heapoverflow.ml](https://heapoverflow.ml/c/linux) > * [Libre Culture](https://lemmy.ml/c/libre_culture) --> ??? > * [Piracy](https://lemmy.ml/c/piracy) --> ???? > * [Open Source](https://lemmy.ml/c/opensource) --> ??? > * [Ask Lemmy](https://lemmy.ml/c/asklemmy) --> [!askwomen@lemmy.ca](https://lemmy.ca/c/askwomen) > * [Privacy](https://lemmy.ml/c/privacy) --> [!privacy@lemmy.ca](https://lemmy.ca/c/privacy), [privacy@community.nicfab.it](https://community.nicfab.it/c/privacy), [privacy@nrsk.no](https://nrsk.no/c/privacy) > * [Technology](https://lemmy.ml/c/technology) --> [!technology@beehaw.org](https://beehaw.org/c/technology), [!technology@gtio.io](https://gtio.io/c/technology) > * [World News](https://lemmy.ml/c/worldnews) --> [!news@beehaw.org](https://beehaw.org/news) > * [Fediverse](https://lemmy.ml/c/fediverse) --> [!fedizens@lemmy.ca](https://lemmy.ca/c/fedizens), > [!thefedizenenquirer@lemmy.ca](https://lemmy.ca/c/thefedizenenquirer), [!fediverse@midwest.social](https://midwest.social/c/fediverse), > [!fediverselore@lemmy.ca](https://lemmy.ca/c/fediverselore), > [!bestofthefediverse@lemmy.ca](https://lemmy.ca/c/bestofthefediverse) > * [Science](https://lemmy.ml/c/science) --> [!science@beehaw.org](https://beehaw.org/c/science), [!science@mander.xyz](https://mander.xyz/c/science), [!science@gtio.io](https://gtio.io/c/science) > * [Memes](https://lemmy.ml/c/memes) --> [!memes@lemmy.ca](https://lemmy.ca/c/memes), [!memes@sopuli.xyz](https://sopuli.xyz/c/memes), [!politicalcompassmemes@lemmy.perthchat.org](https://lemmy.perthchat.org/c/polcompmemes) > * [Gaming](https://lemmy.ml/c/gaming) --> [!gaming@beehaw.org](https://beehaw.org/gaming) > * [Music](https://lemmy.ml/c/music) --> [!music@sopuli.xyz](https://lemmy.ml/c/music), [!music@baraza.africa](https://baraza.africa/c/music), [!music@beehaw.org](https://beehaw.org/c/music) > * [Politics](https://lemmy.ml/c/politics) --> > [!moderatepolitics@sopuli.xyz](https://sopuli.xyz/c/moderatepolitics), [!politics@beehaw.org](https://beehaw.org/c/politics), [!politics@gtio.io](https://gtio.io/c/politics) > * Programming language communities --> [Heapoverflow.ml](https://heapoverflow.ml/communities) > * [Socialism](https://lemmy.ml/c/socialism) --> [!socialism@midwest.social](https://midwest.social/c/socialism) > * [Anarchism](https://lemmy.ml/c/anarchism) --> [!anarchism@lemmy.ca](https://lemmy.ca/c/anarchism) > * [Green](https://lemmy.ml/c/green) --> slrpnk.net, [environment@beehaw.org](https://beehaw.org/c/environment) > * Late Stage Capitalism etc. --> [!aboringdystopia@mander.xyz](https://mander.xyz/c/aboringdystopia)


Padding oracle attack - Wikipedia
>In symmetric cryptography, the padding oracle attack can be applied to the CBC mode of operation, where the "oracle" (usually a server) leaks data about whether the padding of an encrypted message is correct or not. Such data can allow attackers to decrypt (and sometimes encrypt) messages through the oracle using the oracle's key, without knowing the encryption key. It's a pretty genius way to break cipher-block-chained encryption!
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How to write an advanced search?
I want to do an advanced search, something similar to the one in [scryfall](https://scryfall.com/advanced) where I can use either syntax or buttons to search, using multiple filter and logical operators. I have difficulty knowing how to create the SQL query dynamically. If it's possible I'd like to see a guide on how to do something like that. If there isn't a guide a high level description on how to do this would be useful. Useful resources. Off-the-shelf search engine server: - [OpenSearch aka ElasticSearch](https://github.com/opensearch-project) - [Toshi](https://github.com/toshi-search/Toshi) - [Apache Solr](https://lucene.apache.org/solr/): an enterprise search server with a powerful REST API - [Sonic](https://github.com/valeriansaliou/sonic): Fast, lightweight & schema-less search backend. An alternative to Elasticsearch that runs on a few MBs of RAM - [Searx](https://github.com/searx/searx) - [meilisearch](https://github.com/meilisearch/meilisearch) Libraries to build your own search engine server: - Bleve & [tantivy](https://github.com/quickwit-oss/tantivy) are search engine projects, respectively written in Golang and Rust, inspired by Apache Lucene and its algorithms (e.g., tf-idf, short for term frequency-inverse document frequency). Such as Lucene, both are libraries to be used for any search project; however they are not ready-to-use APIs. - [Apache Lucene](https://lucene.apache.org/): the full-text search library > [@Helix@feddit.de](https://lemmy.ml/post/183491/comment/126228) > > If you use Hibernate as your data access layer you can use [Hibernate Search](https://www.baeldung.com/hibernate-search) > [@Thann•](https://lemmy.ml/post/183491/comment/125178) > > 1. you need a database to store and index the information. > 2. you need an API to access the information. > > There are a million ways you could do this; pretty much any database will do, and there are a bunch of options for API’s. OpenSearch (AKA ElasticSearch) might be a good starting point. GraphQL is a powerful API option as well.
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cross-posted from: https://lemmy.ml/post/148476 > Learn the math foundations you need to excel at computer science! > > (Click "courses" at the top)
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