litefs
compose-samples
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litefs | compose-samples | |
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38 | 101 | |
3,620 | 18,767 | |
3.4% | 2.1% | |
8.0 | 9.0 | |
3 months ago | 2 days ago | |
Go | Kotlin | |
Apache License 2.0 | Apache License 2.0 |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
litefs
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Handle Incoming Webhooks with LiteJob for Ruby on Rails
Firstly, LiteJob's reliance on SQLite inherently restricts its horizontal scaling capabilities. Unlike other databases, SQLite is designed for single-machine use, making it challenging to distribute workload across multiple servers. This can certainly be done using novel technologies like LiteFS, but it is far from intuitive.
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Experimenting on the Edge with Turso (and Go)
Im curious to know if others have tried out Turso or LiteFS or any of the newer edge db providers that are popping up in 'real world' applications and what your experiences have been?
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Skip the API, Ship Your Database
Author here. I think we could have set better expectations with our Postgres docs. It wasn't meant to be a managed service but rather some tooling to help streamline setting up a database and replicas. I'm sorry about the troubles you've had and that it's come off as us being disingenuous. We blog about things that we're working on and find interesting. It's not meant say that we've figured everything out but rather this is what we've tried.
As for this post, it's not managed SQLite but rather an open source project called LiteFS [1]. You can run it anywhere that runs Linux. We use it in few places in our infrastructure and found that sharing the underlying database for internal tooling was really helpful for that use case.
[1]: https://github.com/superfly/litefs
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SQLedge: Replicate Postgres to SQLite on the Edge
#. SQLite WAL mode
From https://www.sqlite.org/isolation.html https://news.ycombinator.com/item?id=32247085 :
> [sqlite] WAL mode permits simultaneous readers and writers. It can do this because changes do not overwrite the original database file, but rather go into the separate write-ahead log file. That means that readers can continue to read the old, original, unaltered content from the original database file at the same time that the writer is appending to the write-ahead log
#. superfly/litefs: aFUSE-based file system for replicating SQLite https://github.com/superfly/litefs
#. sqldiff: https://www.sqlite.org/sqldiff.html https://news.ycombinator.com/item?id=31265005
#. dolthub/dolt: https://github.com/dolthub/dolt
> Dolt can be set up as a replica of your existing MySQL or MariaDB database using standard MySQL binlog replication. Every write becomes a Dolt commit. This is a great way to get the version control benefits of Dolt and keep an existing MySQL or MariaDB database.
#. pganalyze/libpg_query: https://github.com/pganalyze/libpg_query :
> C library for accessing the PostgreSQL parser outside of the server environment
#. Ibis + Substrait [ + DuckDB ]
> ibis strives to provide a consistent interface for interacting with a multitude of different analytical execution engines, most of which (but not all) speak some dialect of SQL.
> Today, Ibis accomplishes this with a lot of help from `sqlalchemy` and `sqlglot` to handle differences in dialect, or we interact directly with available Python bindings (for instance with the pandas, datafusion, and polars backends).
> [...] `Substrait` is a new cross-language serialization format for communicating (among other things) query plans. It's still in its early days, but there is already nascent support for Substrait in Apache Arrow, DuckDB, and Velox.
#. benbjohnson/postlite: https://github.com/benbjohnson/postlite
> postlite is a network proxy to allow access to remote SQLite databases over the Postgres wire protocol. This allows GUI tools to be used on remote SQLite databases which can make administration easier.
> The proxy works by translating Postgres frontend wire messages into SQLite transactions and converting results back into Postgres response wire messages. Many Postgres clients also inspect the pg_catalog to determine system information so Postlite mirrors this catalog by using an attached in-memory database with virtual tables. The proxy also performs minor rewriting on these system queries to convert them to usable SQLite syntax.
> Note: This software is in alpha. Please report bugs. Postlite doesn't alter your database unless you issue INSERT, UPDATE, DELETE commands so it's probably safe. If anything, the Postlite process may die but it shouldn't affect your database.
#. > "Hosting SQLite Databases on GitHub Pages" (2021) re: sql.js-httpvfs, DuckDB https://news.ycombinator.com/item?id=28021766
#. awesome-db-tools https://github.com/mgramin/awesome-db-tools
- Fly.io Postgres cluster went down for 3 days, no word from them about it
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LiteFS Cloud: Distributed SQLite with Managed Backups
LiteFS works sorta like that. It provides read replicas on all your application servers so you can use it just like vanilla SQLite for queries.
Write transactions have to occur on the primary node but that's mostly because of latency. SQLite operates in serializable isolation so it only allows one transaction at a time. If you wanted to have all nodes write then you'd need to acquire a lock on one node and then update it and then release the lock. We actually allow this on LiteFS using something called "write forwarding" but it's pretty slow so I wouldn't suggest it for regular use.
We're adding an optional a query API over HTTP [1] soon as well. It's inspired by Turso's approach. That'll let you issue one or more queries in a batch over HTTP and they'll be run in a single transaction.
[1]: https://github.com/superfly/litefs/issues/326
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We Raised a Bunch of Money
Basically, LiteFS: https://github.com/superfly/litefs
And then some load balancer cleverness that reroutes writes to a specific VM: https://fly.io/blog/globally-distributed-postgres/
- Mycelite: SQLite extension to synchronize changes across SQLite instances
- Database suggestion to store and retrieve data
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Key-value store has been added to Deno API
But my guess is they'll have an alternate implementation or something like LiteFS in Deno Deploy that will make this substantially more interesting when running in the Cloud.
compose-samples
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Jetpack Compose Mastery Part 2: Advanced Tools and Resources for Mastering Compose UI
The official documentation provides a comprehensive guide on the basics of Jetpack Compose, components, layouts, theming, and more advanced topics.
- Jetpack Compose UI App Development Toolkit
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How the new Threads app is made
Apparently Jetpack Compose is an Android copy of SwiftUI?
https://developer.android.com/jetpack/compose
Only two HN threads with comments: https://hn.algolia.com/?q=jetpack+compose
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Adaptive layouts in jetpack compose
If you want to take a look at code, we have the Jetnews sample app that support different screen sizes. And Jetcaster also implements features such as table top mode.
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Customizable calendar for Jetpack Compose with option to add app specific dates etc.
check this out : https://github.com/android/compose-samples/tree/main/Crane
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Seeking Guidance: How should I learn Android Dev
So I would say that instead if learning everything from Android SDK, you should just set a goal to create some app. Learn about Activities, their lifecycle, layouts (or Compose if you want to be more up to date). Try to implement your app based on this. Then improve your app using Fragments and their lifecycle. If you truly want to understand Views, which are essentially the building blocks of Android UI then I would recommend implementing your own custom View, which will have completely custom look - it is cool thing to try and you will learn how it all works inside.
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New App structure/template to follow?
The compose samples by Google are a good reference to look into: https://github.com/android/compose-samples
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Let's create notification reminder app in Jetpack Compose.
Basic understanding of Jetpack Compose.
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Architecture Help
The compose-samples repo has a comprehensive list of samples ranging from low to complex projects which might be worth a look.
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Android development beginner.
For instance, there is a link to this repository, that contains all sorts of samples, that are up to date and ready to use. That's cutting edge, which is a recommended start.
What are some alternatives?
litestream - Streaming replication for SQLite.
MPAndroidChart - A powerful 🚀 Android chart view / graph view library, supporting line- bar- pie- radar- bubble- and candlestick charts as well as scaling, panning and animations.
sqlite-s3vfs - Python writable virtual filesystem for SQLite on S3
filament - Filament is a real-time physically based rendering engine for Android, iOS, Windows, Linux, macOS, and WebGL2
dqlite - Embeddable, replicated and fault-tolerant SQL engine.
Flutter - Flutter makes it easy and fast to build beautiful apps for mobile and beyond
mvsqlite - Distributed, MVCC SQLite that runs on FoundationDB.
MVICore - MVI framework with events, time-travel, and more
Bedrock - Rock solid distributed database specializing in active/active automatic failover and WAN replication
android-mvvm-dagger-rxjava-retrofit - A sample project which demostrate use of MVVM and Dagger 2 with RxJava2 along with Retrofit
marmot - A distributed SQLite replicator built on top of NATS
Decompose - Kotlin Multiplatform lifecycle-aware business logic components (aka BLoCs) with routing (navigation) and pluggable UI (Jetpack Compose, SwiftUI, JS React, etc.)