4th Virtual GreeceJS - Tech News

Transcript

1. Tech News
   4th Virtual GreeceJS (Early 2021)
   

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2. NFT
   • Non fungible token
   s
   
   • Non interoperabl
   e
   
   • Indivisibl
   e
   
   • Indestructibl
   e
   
   • Veri
   fi
   abl
   e
   
   • $174m spent since Nov 201
   7
   
   • Beeple artwork as NFT > $12M at Christie’s !!
   !
   
   • Exclusive HackerFantastic authored exploits sold as
   part of an NFT proof of concept series… starting
   with a Quake 3 exploit.
   https:/
   /www.coindesk.com/what-are-nfts | https:/
   /www.beeple-crap.com
   

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3. Elasticsearch went SSPL
   Server Side Public Licens
   e
   
   An answer to AWS managed EL
   K
   
   “Offering the Program as a Service. If you make the
   functionality of the Program or a modi
   fi
   ed version available
   to third parties as a service, you must make the Service
   Source Code available via network download to everyone at
   no charge, under the terms of this License.”
   https:/
   /www.infoq.com/articles/whats-the-next-step-for-data-management/
   

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4. Vite 2.0 = dev server + bundler
   • Esbuild in developmen
   t
   
   • Native ESM modules dev serve
   r
   
   • Rollup in productio
   n
   
   • First-class CSS suppor
   t
   
   • SSR
   https:/
   /vitejs.dev/guide/why.html
   

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5. The Deno Show!
   • Built-in Typescript suppor
   t
   
   • Formatter & linte
   r
   
   • Test runne
   r
   
   • Doc generato
   r
   
   • Sandboxed by default with explicit opt-in
   fi
   ne grained permission
   s
   
   • URL import
   s
   
   • Promise based standard AP
   I
   
   • WebGL support for ML
   https:/
   /syntax.fm/show/322/the-deno-show
   

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6. TreeSitter - Parser generator tool
   • Rus
   t
   
   • Javascrip
   t
   
   • Javascript (WASM
   )
   
   • Pytho
   n
   
   • Rub
   y
   
   • Haskell
   https:/
   /tree-sitter.github.io/tree-sitter/
   

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7. Tooling!
   

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8. Agenda
   const mongoConnectionString = "mongodb:
   / /
   127.0.0.1/agenda";
   
   
   const agenda = new Agenda({ db: { address: mongoConnectionString } });
   
   
   agenda.def
   i
   ne("delete old users", async (job)
   = >
   {
   
   
   await User.remove({ lastLogIn: { $lt: twoDaysAgo } });
   
   
   });
   
   
   (async function () {
   
   
   await agenda.start();
   
   
   await agenda.every("3 minutes", "delete old users");
   
   
   await agenda.every("
   * /
   3 * * * *", "delete old users");
   
   
   })();
   
   
   A light-weight job scheduling library for Node.js
   

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9. Sqlcommenter
   2020-11-28 14
   :
   17
   :
   04.310 UTC [2423030]
   :
   [66-1] db=waydemo,user=postgres
   
   
   LOG
   :
   duration: 400.145ms
   
   
   statement: UPDATE "demo_order" SET "created" =
   
   
   '2020-12-03T19
   :
   11
   :
   10.946783+00
   :
   00'
   : :
   timestamptz, "city" = 'Mountain View',
   
   
   "pick_up_address" = '6999 XXXXXXXXX', WHERE "demo_order"."order_id" =
   
   
   '0888a2e0-f81d-4556-aa55-76046186a045'
   : :
   uuid
   
   
   /
   *
   controller=‘assign_order’,db_driver=‘django.db.backends.postgresql’,framework='d
   %3A3.0.7', route='demo/assign_order'
   * /
   
   ORM auto
   -
   instrumentation library
   • Augment slow query logs with ORM informatio
   n
   
   • Trace ORMs with OpenTelemetry integratio
   n
   
   • Cloud SQL integrated
   

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10. SQ
    $ sq add postgres:
    / /
    sakila:$PASSWD@192.168.50.132/sakila
    
    
    @sakila_pg postgres sakila@192.168.50.132/sakila
    
    
    $ sq inspect @sakila_pg.actor
    
    
    TABLE ROWS TYPE SIZE NUM COLS COL NAMES
    L TYPES
    
    
    actor 200 table 72.0KB 4 actor_id, f
    i
    rst_name, last_name, last_upd
    
    
    $ sq '.actor | .[0
    :
    3] | .f
    i
    rst_name, .last_name'
    
    
    f
    i
    rst_name last_name
    
    
    PENELOPE GUINESS
    
    
    NICK WAHLBERG
    
    
    $ sq '.actor | .[0
    :
    3] | .f
    i
    rst_name, .last_name'
    - -
    jsonl
    
    
    {"f
    i
    rst_name": "PENELOPE", "last_name": "GUINESS"}
    
    
    {"f
    i
    rst_name": "NICK", "last_name": "WAHLBERG"}
    

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