blog/twie_2025_11_21 (#1246)

Co-authored-by: Mirela Prifti <[email protected]>

Author: DadeSko

content/src/content/docs/blog/this-week-in-effect/2025/11/21.mdx

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+---
+pagefind: false
+title: This Week in Effect - 2025-11-21
+excerpt: 12k ⭐️ on GitHub! Maybe I Was Wrong About Effect by Ben Davis. Effect NYC Meetup hosted by Warp. Effect Office Hours 9.
+date: 2025-11-21
+authors:
+  - davide_scognamiglio
+  - mirela_prifti
+  - michael_arnaldi
+tags:
+  - This Week In Effect
+---
+
+import { YouTube } from "@astro-community/astro-embed-youtube"
+import Tweet from "astro-tweet"
+import TwitchPlayerNonInteractive from "@/components/TwitchPlayerNonInteractive.astro"
+
+Hi Effecters!
+
+Welcome back to This Week In Effect (**TWIE**) - your weekly update of the latest developments in the Effect community and ecosystem.
+
+Effect is a powerful TypeScript library that helps developers build complex, synchronous, and asynchronous programs. One key feature that sets Effect apart is how it leverages structured concurrency to provide features such as async cancellation and safe resource management, making it easier to build robust, scalable, and efficient programs.
+
+To get started, below you’ll find links to our documentation as well as our guide for installing Effect. Enjoy!
+
+- [Effect Documentation](/docs/getting-started/introduction/)
+- [Installing Effect](/docs/getting-started/installation/)
+
+
+**Recent major updates:**
+
+- [Effect 3.19](https://effect.website/blog/releases/effect/319) Release.
+- [Effect AI SDK](https://github.com/Effect-TS/effect/releases/tag/%40effect%2Fai%400.27.0) Release.
+- Durable workflows in TypeScript with [`@effect/workflow`](https://github.com/Effect-TS/effect/blob/main/packages/workflow/README.md) - currently in alpha.
+- The [Effect community](https://discord.gg/effect-ts) on Discord reached 5620+ members!
+
+ 
+## Technology
+
+Here are all the technical changes from the past week.
+
+### Effect Core
+- [Fix Types.DeepMutable mapping over functions](https://github.com/Effect-TS/effect/pull/5752) (Bug Fix)
+- [Add PartitionedSemaphore module](https://github.com/Effect-TS/effect/pull/5739) (Feature, next-minor)
+- [Backport Effect.gen optimization](https://github.com/Effect-TS/effect/pull/5772) (Feature)
+- [Add EntityResource module](https://github.com/Effect-TS/effect/pull/5778) (Feaure)
+- [Add logs to first propagated span](https://github.com/Effect-TS/effect/pull/5710) (Bug Fix, next-minor)
+
+### Effect Cluster
+- [Add entityRegistrationTimeout to ShardingConfig](https://github.com/Effect-TS/effect/pull/5765) (Feature)
+- [Add in-memory WorkflowEngine layer](https://github.com/Effect-TS/effect/pull/5771) (Feature)
+- [Ensure ClusterCron's can be resumed if re-added](https://github.com/Effect-TS/effect/pull/5775) (Bug Fix)
+- [Add EntityResource module](https://github.com/Effect-TS/effect/pull/5778) (Feaure)
+- [Provide seperate close scope to EntityResource via context](https://github.com/Effect-TS/effect/pull/5781) (Improvement)
+- [Add EntityResource.makeK8sPod](https://github.com/Effect-TS/effect/pull/5783) (Feature)
+
+### Effect Experimental
+- [Fix partial window calculation for fixed window rate limiter](https://github.com/Effect-TS/effect/pull/5761) (Bug Fix)
+- [Fix RateLimiter fixed window alogrithm](https://github.com/Effect-TS/effect/pull/5763) (Bug Fix)
+- [Add RateLimiter helpers makeWithRateLimiter and makeSleep](https://github.com/Effect-TS/effect/pull/5773) (Feature)
+
+### Effect Opentelemetry
+- [Add logs to first propagated span](https://github.com/Effect-TS/effect/pull/5710) (Bug Fix, next-minor)
+
+### Effect Platform
+- [Fix: scalar configuration and types](https://github.com/Effect-TS/effect/pull/5759) (Bug Fix)
+- [Add EntityResource.makeK8sPod](https://github.com/Effect-TS/effect/pull/5783) (Feature)
+
+### Effect RPC
+- [Make RpcClient socket retry schedule configurable](https://github.com/Effect-TS/effect/pull/5769) (Improvement)
+- [Add in-memory WorkflowEngine layer](https://github.com/Effect-TS/effect/pull/5771) (Feature)
+
+### Effect SQL
+- [Fix query result streaming in @effect/sql-pg](https://github.com/Effect-TS/effect/pull/5758) (Bug Fix)
+
+### Effect Workflow
+- [Add in-memory WorkflowEngine layer](https://github.com/Effect-TS/effect/pull/5771) (Feature)
+
+ 
+
+## Community Highlights
+
+- This week, we celebrate another community milestone: Effect crossed 12k stars on GitHub! 🌟
+   <Tweet id="1991882962338762870" />
+
+&nbsp;
+
+- We had a great time at our NYC meetup last Wednesday! Huge thanks to [Warp](https://www.joinwarp.com/) for welcoming us into their space, as well as Kit Langton and Harry Solovay for sharing insights on Effect and Effect AI! Appreciate everyone who came out to connect and learn.
+   <Tweet id="1991525351256912344" />
+
+&nbsp;
+
+- **Maybe I Was Wrong About Effect... (is it really worth it?)** by Ben Davis. Spoiler alert: it is!
+  <YouTube
+  id="https://www.youtube.com/embed/MHpf_XMz_aM?si=gFnoWI3k9M7Dla2W"
+  title="Maybe I Was Wrong About Effect... (is it really worth it?)"
+  />
+
+&nbsp;
+
+- [effect-env](https://github.com/PaulJPhilp/effect-env) by Paul Philp – a TypeScript library for managing environment variables with type safety, schema validation, and security features, built with Effect, has been updated to the 0.4.1 version!
+
+&nbsp;
+
+- [effect-decorate](https://marketplace.visualstudio.com/items?itemName=DearHumanDev.effect-decorate) - a decorative-only VSCode extension that helps reduce Effect code's verbosity. Project by Enrico Polansky.
+
+&nbsp;
+
+- [Typing Terminal](https://typingterminal.com) by [Devin Jameson](https://github.com/devinjameson) - a real-time multiplayer typing game built with Effect and [Foldkit](https://foldkit.dev/).
+
+&nbsp;
+
+- [Effect Prisma Generator](https://www.npmjs.com/package/effect-prisma-generator) - A Prisma generator that creates a fully-typed, Effect-based service wrapper for your Prisma Client. Project by [Mathieu Post](https://github.com/m9tdev).   
+
+&nbsp;
+
+- Dillon Mulroy livestreamed three new episodes of [**Building effect-cloudflare, Effect TS native bindings for CF 🚀**](https://www.twitch.tv/videos/2622485981?filter=archives&sort=time).
+
+&nbsp;
+## Effect Content Update
+
+ - The 9th episode of **Effect Office Hours** went live on Wednesday! We will publish an edited version on our YouTube channel soon. In the meantime, you can watch the [livestream on X(Twitter)](https://x.com/EffectTS_/status/1991159651728232728)
+
+&nbsp;
+
+- **Office Hours 8: Effect managed runtime, error handling, fiber management, API design patterns** is now on our YouTube Channel.
+
+<YouTube
+  id="https://www.youtube.com/embed/qU5z5VqIdxg?si=K9oXNdzokmOoktfb"
+  title="Office Hours 8: Effect managed runtime, error handling, fiber management, API design patterns"
+/>
+
+
+&nbsp;
+
+## Cause & Effect Podcast
+
+Don't forget to listen to our **Cause & Effect** podcast hosted by Johannes Schickling and available on [YouTube](https://www.youtube.com/@effect-ts), [X(Twitter)](https://x.com/EffectTS_/status/1988255926743093386), and audio platforms like [Spotify](https://open.spotify.com/episode/2E525BrMXFVfXIOGk0QIM9) and [Apple Podcast](https://podcasts.apple.com/it/podcast/inside-openrouters-tech-stack-and-use-of-effect-6/id1781879869?i=1000736256230).
+
+This podcast highlights stories from software engineers and companies using Effect in production. Each episode explores their journey of adopting Effect, including the learning process, challenges faced, and the benefits of integrating Effect into their tech stack.
+
+We've published our sixth episode with Louis Vichy, co-founder of [OpenRouter](https://openrouter.ai/), who joined Johannes Schickling and Michael Arnaldi to talk about OpenRouter’s TypeScript stack, their internal tooling powered by Effect, and the engineering challenges of scaling an AI platform processing trillions of tokens weekly.
+
+<YouTube
+  id="https://www.youtube.com/embed/AVJIqQi11lM?si=BZYWB8eGD70Vvt0k"
+  title="Inside OpenRouter’s Tech Stack and Use of Effect | Louis Vichy | Cause & Effect 6"
+/>
+
+&nbsp;
+## Effect Job Opportunities
+
+More and more companies are adopting Effect in their projects. Here’s a list of companies looking for software engineers with Effect experience:
+
+- **Expand.ai**: [Founding Engineer](https://www.expand.ai/careers/founding-engineer)
+
+- **Platonic Systems**: [Remote Effect Engineers](https://twitter.com/platonicsystems/status/1861470819861311945)
+
+- **Inato**: [Product Engineers / Fullstack Engineers](https://jobs.lever.co/inato/6df2d1e3-ce0a-487b-a930-840759803d44)
+
+- **Medbill.ai**: [Founding Software Engineers (full-stack and backend)](https://www.linkedin.com/posts/codingtom_medbill-ai-activity-7260092522708762624-N7TH)
+
+- **Oneiro Solutions**: Software Engineer - Core Team. [Join Effect Discord](https://discord.com/channels/795981131316985866/796153351372275743) and DM *leighman* for further info.
+
+- **Microsub**: [TS Developer](https://x.com/0xdownshift/status/1880013835878154510)
+
+- **Samsung Food**: [Full Stack Developer](https://whisk.bamboohr.com/careers/110)
+
+- **Margins**: [Product Engineer](https://margins.app/jobs/product-engineer)
+
+- **[Precurion](https://precurion.com/)** looking for a remote‑first Founding Engineer with Effect experience – See the job posting in the `#job-board` channel on [our Discord](https://discord.com/channels/795981131316985866/796153351372275743/1362610725931061258).
+
+- **Vitalize Care** is hiring a full-stack engineer with Effect experience: [Full-Stack Engineer](https://jobs.ashbyhq.com/vitalize/d907ba5f-0f2f-4bb4-931a-1680d6daf81a)
+
+- **Embedded Insurance** is hiring for a [Senior Software Engineering](https://embeddedinsurance.bamboohr.com/careers/23) position.
+
+- **Betalyra**, an AI consulting company from Portugal, is looking for a part-time freelance software engineer (TypeScript/Effect) with AI experience – see the job posting in the `#job-board` channel on [our Discord](https://discord.com/channels/795981131316985866/796153351372275743/1362610725931061258).
+
+- **Software Intelligence Works**: [Senior Full-Stack Engineer](https://remotive.com/remote-jobs/software-dev/senior-full-stack-engineer-2011648)
+
+- **14.ai**: [Founding engineer](https://14.ai/careers)
+
+- **Wander** is hiring [Software Developers](https://ship.wander.com) with experience in Effect.
+
+- **Glide**: [Senior Frontend Product Engineer](https://www.glideapps.com/jobs/frontend-product-engineer)
+
+- **Supermemory**: [Founding Backend / Infrastructure Engineer](https://x.com/i/jobs/1928194391946186862)
+
+- **Ressio**: [Senior full stack Engineer](https://crocus-hardhat-6f7.notion.site/Senior-full-stack-engineer-back-end-leaning-28ce06d15219800eb2bcca558d9f0446)
+
+- **Stealth team** looking for a software engineer with Effect experience – see the job posting in the `#job-board` channel on [our Discord](https://discord.com/channels/795981131316985866/796153351372275743/1362610725931061258).
+
+- **A French-speaking** startup team led by Stephan Le Dorze is looking for a freelancer to join them - [see his LinkedIn post](https://www.linkedin.com/posts/stephaneledorze_recherche-senior-typescript-developer-activity-7384894173604265984-btNb) for more details.
+
+- **Freckle.io** is hiring [Platform Engineers](https://x.com/code_typist/status/1930326662677434561) with experience in Effect.
+
+- **A stealth team** that has already scaled their product to 50K daily active users in the last year, is looking for [Effect Developers](https://x.com/wireless_dev/status/1930314012723687739). DM [wireless](https://x.com/wireless_dev) on X for more info.
+
+- Job opening for [Japanese-speaking developers](https://note.com/luma/n/n679d4dcdb363)
+
+- **VST**: [Senior Full Stack Software Engineer](https://www.linkedin.com/jobs/view/3854111540/)
+
+- **Globe Commerce**: [Founding Product Engineer](https://www.linkedin.com/jobs/view/4264203054)
+
+- **Introw**: [Staff Software Engineer](https://join.com/companies/introw/14395111-staff-software-engineer)
+
+- **Gale**: [SWE Intern - Remote (CAN/US)](https://forms.galevisa.com/r/m6gr7e)
+
+- **Heartbeat**: [Senior Software Engineer](https://jobs.heartbeat.chat/35182) 
+
+- **Superwall**: [Full-stack Mobile Developer](https://x.com/jakemor/status/1972770955500876070)
+
+- **Tranched**: [Full-stack Engineer Web3](https://tranched.fi/careers/fullstack-developer-web3)
+
+- **spring.new**, Anthropic's flagship customer, is hiring engineers experienced in Effect. See the job posting in the `#job-board` channel on [our Discord](https://discord.com/channels/795981131316985866/796153351372275743/1405134163287343196).
+
+- **ManageSpace** is looking for a Senior Developer to mentor other developers and migrate to Effect – see the job posting in the `#job-board` channel on [our Discord](https://discord.com/channels/795981131316985866/796153351372275743/1389557459949060098).
+
+- **coteach.ai** is looking for a Software Engineer – see the job posting in the `#job-board` channel on [our Discord](https://discord.com/channels/795981131316985866/796153351372275743/1394724166309253290) and DM *Peter Edmonds* for further info.
+
+- **Small SaaS team** is looking for a part-time Effect Developer to implement Effect in their stack. The job posting is available in the `#job-board` channel on [our Discord](https://discord.com/channels/795981131316985866/796153351372275743/1397684638834491412), DM *jonpage* for further info.
+
+- **PhosPhor** is [hiring engineers](https://phosphor.co/) experienced in Effect. You may also reach out to the Phosphor team on [our Discord](https://discord.com/channels/795981131316985866/796153351372275743/1418407399139578067).
+
+- **Warp** is hiring a [Product Engineer](https://www.joinwarp.com/careers/roles?ashby_jid=655962db-5fbe-40cc-a072-9522295b3cbc)
+
+- **Sellhub** is looking for a Backend Engineer. See the job posting in the `#job-board` channel on [our Discord](https://discord.com/channels/795981131316985866/796153351372275743/1423684096428736652).
+
+- **Goblins** is looking for a Product Founding Engineer. See the job posting in the `#job-board` channel on [our Discord](https://discord.com/channels/795981131316985866/796153351372275743/1439740311277404231).
+
+_Disclaimer: Please note that these job postings are shared for informational purposes, and we encourage applicants to verify details directly with the hiring companies._
+
+
+&nbsp;
+## Effect Merch Store
+
+The [Effect Merch Store](https://effect.website/merch) offers a selection of Effect-branded items designed for the community. All orders are processed and fully managed through [Printful](https://www.printful.com/).
+
+<Tweet id="1868605126862385238" />
+
+
+&nbsp;
+## Closing Notes
+
+That's all for this week. Thank you for being a vital part of our community. Your feedback is highly valued as we fine-tune this format. Feel free to share your thoughts, and we'll do our best to tailor it to the needs of our community.
+
+_Effect Community Team_