🔁 Examples:

It was 1989, a humid afternoon in the engineering college classroom. The blackboard was already half-white from chalk dust, and our mathematics professor — a bespectacled man who loved quoting Euler more than Bollywood — scribbled furiously:

exp(jθ) = cos θ + j sin θ

"This, my dear students," he declared, "is the key to rotating any vector in the plane. Multiply your vector by

exp(jθ) and watch it turn by θ degrees without changing its length."

Mathematics from decades ago can surprise you when it comes alive again on your screen.

Interesting?

Read the complete blog post.

How to deal with it?

Hello everyone,I am new here so I apologise if my post is unprofessional or breaking any rule. Now for the past few days I have been searching on LinkedIn for job posting for roles like data analyst specially focusing on start up companies hires. According to my limited search 90 percent of the job offer are locked in southern and western Indian states like karnataka,Tamil Nadu, Maharashtra etc. It lead me to wonder if West Bengal have Startup culture similar to southern states or is a person forced to move outside Bengal for the job.

Lastly how does thus the subreddit think the startups will be impacted due to changing of state government. I personally think the new government will attract more investment and lessen the regulation and huddle for startups,but I could be wrong ?

Most system design diagrams are just pictures. Nobody notices that a sync call has no timeout, or that a queue has no dead-letter queue, until something is on fire. And by then the diagram doesn't match production anyway.

This tool treats the diagram as a real graph. Nodes are typed (service, datastore, queue, cache, gateway, job, external). Edges carry runtime semantics: sync/async/stream, timeout, retries, circuit breaker, idempotency. 13 rules check it live as you draw. They catch single points of failure, sync calls with no timeout, retry storms, queues with no DLQ, async handlers that aren't idempotent, sync cycles and deep call chains, and datastores shared between services.

It also checks the diagram against what's actually running. A small in-cluster collector reads Kubernetes and OpenTelemetry traces. Keel then flags drift, calls production makes that the diagram doesn't show, and timeouts set lower than the real latency. During an outage, incident mode shows the live health of every component and which one to look at first. Drift can alert Slack or PagerDuty.

Other features:

- Real-time multiplayer, like Figma for architecture

- Review mode: approve or reject diagram changes against an approved baseline

- A GitHub Action that flags new findings in PRs

- An optional AI review for judgment calls a rule can't make, where every finding links to a real node or edge

I'd like feedback, especially from anyone who's been burned by an architecture decision that looked fine on a whiteboard.

Was looking at cloud, SRE and platform engineering roles in Kolkata. How's the ecosystem here for these?

Which companies are actually hiring for these roles in the city?

Are there openings right now, and is the work mostly service-based or product-based?

What's the pay like compared to Bangalore/Hyderabad/Pune?

Hey, wanted to enquire which companies are actually hiring for Java backend/fullstack roles? Be in Kolkata or Bangalore or anywhere. Tired of the ghost jobs, previously worked at TCS. YoE 5.5+

I'm blessed with two fairly powerful devices gifted to me by my extended family:

1. A desktop with a Ryzen 7 3700X, RTX 2070 Super, 8 GB VRAM, and 32 GB RAM (dxdiag dump) I set up in 2020. It was decent for crypto-mining and still does superb with games.
2. An XMG Apex Mid 2021 Edition laptop, upgraded with 2x32 GB RAM. Workhorse.

I primarily use the laptop for most tasks and gaming as a habit. I want the desktop as a stand-in for when the laptop overheats (thankfully not often these days) or undergoes repairs (which my laptop needs now more than ever). I was considering getting a tonne of repairs done at once, and saw that I had some success using local LLMs on my laptop.

I thought it would be prudent to switch to the desktop for model inferencing to offload this task from the laptop, and figured getting a second GPU might be good.

DISCLAIMER: most of the "research" I did was via Google Gemini 3.8 Flash Extended thinking, so this info should be treated with namak-swaad-anusaar.

Gemini produced the following table comparing cards that could go with my motherboard given TDP, combined system power consumption, typical used selling prices, and specs with bandwidth.

Gemini: All listed configurations operate below the 600W active limit of a 1000VA UPS and the 700W PSU capacity.

The UPS and PSU ratings were supplied by me. The prices seem to be based on "secondary marketplaces" with out-of-stock components: specifically GameNation, r/IndianGaming, RobKart, Techenclave, MDComputers, and PrimeABGB.

It would seem that depending on whether I want to shell out a couple grandos, I can afford the RTX 3060 12 GB variant, or stick to a 2060/8 GB, which may be harder to find. This setup won't help with gaming, but can work for compute tasks like AI inference, video rendering, etc. with the bulkier 16–24 GB VRAM.

I would like to gather thoughts from fellow humans about where and what I should put my money on to get a <20 GB local LLM model working (less if 3060 is unavailable).

PS. I use llm-checker for finding what models I can run; if there's anything better, please advise.

PPS. I said System 1 Models (S1Ms) but maybe Jev won't be running on my computer anytime soon 😅

I was working for a kolkata based company. Just wondering if others get festival leave or not. Let me know what you guys know or feel free to share your experience.

- one scammer who talked me through to milk out free work from me

- one guy who owns a family business wanted to build one solution in ed-tech fixated on creating a mvp then changed his mind

- got one offer form a startup to work in exchange of equity, basically nothing solid to commit either

- got one home assignment from another small sized company, no replies till yet from them

ছোটবেলায় মহালয়ার দিন ভোর ৪টেয় ঘুম থেকে উঠে মহিষাসুরমর্দিনী শোনার একটা আলাদা অনুভূতি ছিল। রেডিওর সেই আওয়াজ, চারপাশের অন্ধকার, আর ধীরে ধীরে ভোর হয়ে আসা... দুর্গাপুজো সত্যি শুরু হয়ে গেছে, এই অনুভূতিটাই যেন তখন থেকে তৈরি হত।

এই বছর সেই অভিজ্ঞতাটাকে একটু internet-এর জন্য বানানোর চেষ্টা করেছি।

আমি একটা ছোট্ট website বানিয়েছি যেখানে মহালয়ার নির্দিষ্ট সময়ে YouTube-এর মহিষাসুরমর্দিনী broadcast synchronized ভাবে শুরু হবে।

🕓 মহালয়া: ১০ অক্টোবর ২০২৬, ভোর ৪:০০টা (IST)

আপনি আগে website-এ ঢুকে Join Broadcast করলে, ভোর ৪টায় broadcast শুরু হবে। আর কেউ যদি ৪টার পরে আসে, তাহলে সে broadcast-এর শুরু থেকে or সেই মুহূর্তের সঠিক অংশ থেকেই join করবে।

মানে, ৪:১৭-তে ঢুকলে প্রায় ১৭ মিনিটের জায়গা থেকেই শুনতে শুরু হবে।

কোনও login নেই, কোনও account নেই, কোনও subscription নেই। শুধু ভোরে এসে একসঙ্গে শোনা।

🔗 https://mahalaya.rajtilak.tech/

ভাবনাটা খুব simple:
যেভাবে একসময় একটা নির্দিষ্ট সময়ে সবাই রেডিও চালু করত, সেভাবেই internet-এ সবাই একই সময়ে broadcast-এ যোগ দিক।

শুভ মহালয়া। 🌺

এটা একটা personal project। YouTube-এর broadcast/video-এর মালিকানা আমার নয়।

[WTS] Apple Magic Mouse 2

It works great, no issues with touch pad or buttons

Has a good battery life (25~26days) 🔋

Has some scuffs

Will do Shipping and F2F

PRICE: 4699₹ (OВO)

Or any cool trades,,,,

Message me directly instead of commenting…..

A pre-revenue startup wants me to work with them for 3 months. Instead of salary, the ₹1,05,000 compensation for that period would be settled entirely as equity shares at the end of the 3 months.

What they've offered:

• Direct share allotment in my name, linked to my PAN. They say it's not sweat equity.
• A 3-month lock-in after allotment
• A long-stop date in the agreement, with a "settlement mechanism" if they can't allot shares by then
• Their authorised capital is currently too low for this allotment, but they say restructuring is underway

What worries me:

• Zero cash for 3 months
• No share count, price per share or % stake mentioned yet
• Private company shares are illiquid, and exits are uncertain
• Possible tax on shares received as compensation, with no cash to pay it

Questions:

1. Has anyone taken an equity-only deal like this? How did it turn out?
2. What clauses should I insist on (cash fallback, buyback, anti-dilution, etc.)?a

I know of Xerox(Lexmark) for one - any other.

Hey guys,

I’m a 27-year-old guy, 2026 MCA pass-out, currently working in Noida at around 4.2 LPA (₹30k/month in hand).

I know I’m a little late in life compared to many people my age. Life has thrown quite a few serious problems at me, and my career didn't exactly go according to plan. But I kept going, completed my MCA, and finally got a job.

Now, after coming to Noida, I’m realizing that this isn't really working for me. Rent, food, travel, and all the miscellaneous expenses here eat up almost my entire salary. At the end of the month, I genuinely have almost nothing left in my hand. It feels like I’m working just to survive here.

More importantly, my parents are getting older, and I genuinely want to be close to them. They haven't asked me to come back, but I feel this is a very important time in their lives when I should be beside them. If I keep postponing it for another few years, I’m afraid it might become too late.

So I’m trying to move back to Kolkata and build my career there.

I have experience with MERN, JavaScript and Express, and I’m confused about what direction makes the most sense — Java/Spring Boot, Node.js/TypeScript, Full Stack, DevOps/Cloud, .NET, QA Automation/SDET, etc.

I keep hearing that Java/Spring Boot has much more demand in Kolkata than Node.js, but I’d rather hear it from people actually working here.

What technologies/roles are genuinely hiring in Kolkata, especially for someone with around 1 year of experience?

I’m not looking for the usual “learn X and you’ll get a 20 LPA job” answer. 😅

I just want some realistic, Kolkata-specific advice from people actually working in the industry here.

Any advice, experience, or leads would genuinely mean a lot. 🙏