proposal-observable
octosql
proposal-observable | octosql | |
---|---|---|
12 | 34 | |
3,036 | 4,699 | |
0.2% | - | |
0.0 | 1.2 | |
over 4 years ago | 5 days ago | |
JavaScript | Go | |
- | Mozilla Public License 2.0 |
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proposal-observable
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Proposal: Signals as a Built-In Primitive of JavaScript
https://github.com/tc39/proposal-observable
And there's the new one which seems to be getting implemented in node right now:
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Observable API Proposal
How does it differ from <https://github.com/tc39/proposal-observable/>?
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The Truth about Svelte
I think it is a shame that the Observable proposal [1] still seems somewhat stuck in Stage 1. It's a better idea than just raw event emitters because of composability (if no other reason). Making Observables "first class" could go a long way to unifying a lot of reactivity patterns in various frameworks, in theory at least.
To be fair, Observables and especially Observable composition has a rough learning curve and many frameworks like Svelte intentionally prefer implict reactivity and avoiding things like explicit Observables because they are seen as too complex/"too hard" for the average developer.
(Then you get awful worst of both worlds frameworks like Angular that sort of rely on Observables but yet also don't trust teaching Observables and wind up with code that isn't properly Observable and so also has all the code for implicit reactivity and is full of nasty escape hatches that cause all sorts of composition problems and unnecessary side effects.)
[1] https://github.com/tc39/proposal-observable
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💡 Observable Mutable Wrapper Object
Uses an interface described in the TC39 observables proposal
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Example of Asynchronous programming using Observer pattern vs Promise
JavaScript doesn't have any built-in observables (addEventListener is part of the DOM API specific to browsers) though there is an old observable proposal collecting dust. I think ReactiveX (RxJS) is pretty much the go-to for any kind of observable functionality you may want. That may be a good place to start to really see what observables can do.
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JavaScript Evolutsiyasi Qisqa Satrlarda!
Observablelar streamlarga asoslangan reaktiv dasturlash paradigmasini olib kiradi JSga. Shaxsan menga eng yoqqan takliflardan biri. Bu haqida ham alohida maqola yozish niyat bor. RxJS (Angular) bilan ishlab ko'rganlar bo'lsa buni nimaligini juda yaxshi tushunishadi, endi bu library emas balki native 🚀 !!!
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4 Ways to Handle Async Operations in Javascript
Observable is an object that takes a stream of data and emits events over time to react accordingly. There is a talk to add it to the ECMAScript standard and its proposal is here. Till now it is not part of the ECMAScript standard so to use it, you have to use a third-party library and the well-known Reactive Extension in Javascript is RxJs.
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Reactive Programming
Well, the answer is surprisingly no. But, there is an active tc39 proposal going on around for a while, didn’t find it much active though, you could watch out here — https://github.com/tc39/proposal-observable
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Why do we need rxjs library as JavaScript is reactive by default?
RxJS is an implementation of observables which do not exist natively in JavaScript. There is a proposal for adding observables to the language, but it's only stage 1 and hasn't been active for years.
- Query Engines: Push vs. Pull
octosql
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Wazero: Zero dependency WebAssembly runtime written in Go
Never got it to anything close to a finished state, instead moving on to doing the same prototype in llvm and then cranelift.
That said, here's some of the wazero-based code on a branch - https://github.com/cube2222/octosql/tree/wasm-experiment/was...
It really is just a very very basic prototype.
- Analyzing multi-gigabyte JSON files locally
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DuckDB: Querying JSON files as if they were tables
This is really cool!
With their Postgres scanner[0] you can now easily query multiple datasources using SQL and join between them (i.e. Postgres table with JSON file). Something I strived to build with OctoSQL[1] before.
It's amazing to see how quickly DuckDB is adding new features.
Not a huge fan of C++, which is right now used for authoring extensions, it'd be really cool if somebody implemented a Rust extension SDK, or even something like Steampipe[2] does for Postgres FDWs which would provide a shim for quickly implementing non-performance-sensitive extensions for various things.
Godspeed!
[0]: https://duckdb.org/2022/09/30/postgres-scanner.html
[1]: https://github.com/cube2222/octosql
[2]: https://steampipe.io
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Show HN: ClickHouse-local – a small tool for serverless data analytics
Congrats on the Show HN!
It's great to see more tools in this area (querying data from various sources in-place) and the Lambda use case is a really cool idea!
I've recently done a bunch of benchmarking, including ClickHouse Local and the usage was straightforward, with everything working as it's supposed to.
Just to comment on the performance area though, one area I think ClickHouse could still possibly improve on - vs OctoSQL[0] at least - is that it seems like the JSON datasource is slower, especially if only a small part of the JSON objects is used. If only a single field of many is used, OctoSQL lazily parses only that field, and skips the others, which yields non-trivial performance gains on big JSON files with small queries.
Basically, for a query like `SELECT COUNT(*), AVG(overall) FROM books.json` with the Amazon Review Dataset, OctoSQL is twice as fast (3s vs 6s). That's a minor thing though (OctoSQL will slow down for more complicated queries, while for ClickHouse decoding the input is and remains the bottleneck).
[0]: https://github.com/cube2222/octosql
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Steampipe – Select * from Cloud;
To add somewhat of a counterpoint to the other response, I've tried the Steampipe CSV plugin and got 50x slower performance vs OctoSQL[0], which is itself 5x slower than something like DataFusion[1]. The CSV plugin doesn't contact any external API's so it should be a good benchmark of the plugin architecture, though it might just not be optimized yet.
That said, I don't imagine this ever being a bottleneck for the main use case of Steampipe - in that case I think the APIs themselves will always be the limiting part. But it does - potentially - speak to what you can expect if you'd like to extend your usage of Steampipe to more than just DevOps data.
[0]: https://github.com/cube2222/octosql
[1]: https://github.com/apache/arrow-datafusion
Disclaimer: author of OctoSQL
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Go runtime: 4 years later
Actually, folks just use gRPC or Yaegi in Go.
See Terraform[0], Traefik[1], or OctoSQL[2].
Although I agree plugins would be welcome, especially for performance reasons, though also to be able to compile and load go code into a running go process (JIT-ish).
[0]: https://github.com/hashicorp/terraform
[1]: https://github.com/traefik/traefik
[2]: https://github.com/cube2222/octosql
Disclaimer: author of OctoSQL
- Run SQL on CSV, Parquet, JSON, Arrow, Unix Pipes and Google Sheet
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Beginner interested in learning SQL. Have a few question that I wasn’t able to find on google.
Through more magic, you COULD of course use stuff like Spark, or easier with programs like TextQL, sq, OctoSQL.
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How I Used DALL·E 2 to Generate The Logo for OctoSQL
The logo was created for OctoSQL and in the article you can find a lot of sample phrase-image combinations, as it describes the whole path (generation, variation, editing) I went down. Let me know what you think!
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How I Used DALL·E 2 to Generate the Logo for OctoSQL
Hey, author here, happy to answer any questions!
The logo was created for OctoSQL[0] and in the article you can find a lot of sample phrase-image combinations, as it describes the whole path (generation, variation, editing) I went down. Let me know what you think!
[0]:https://github.com/cube2222/octosql
What are some alternatives?
duckdb - DuckDB is an in-process SQL OLAP Database Management System
fp-ts - Functional programming in TypeScript
q - q - Run SQL directly on delimited files and multi-file sqlite databases
eslint-plugin-unicorn - More than 100 powerful ESLint rules
trdsql - CLI tool that can execute SQL queries on CSV, LTSV, JSON, YAML and TBLN. Can output to various formats.
eslint-plugin-github - An opinionated collection of ESLint rules used by GitHub.
sqlitebrowser - Official home of the DB Browser for SQLite (DB4S) project. Previously known as "SQLite Database Browser" and "Database Browser for SQLite". Website at:
RxJS - A reactive programming library for JavaScript
sqlite-utils - Python CLI utility and library for manipulating SQLite databases
cross-project-council - OpenJS Foundation Cross Project Council
textql - Execute SQL against structured text like CSV or TSV