sourabh86

The webapp does have some challenges which can only be solved with a native app. For example, a very useful feature will be to create an AR view of sun's path. That way it is helpful to plan your shoot in a granular way but apart from that, webapp does the job pretty well as it has all the location data it needs.

An interactive guide to service workers which help with offline capabilities and enabling PWA (progressive web apps)

I wrote an explainer on classic edge detection algorithms (Sobel, Canny, Laplacian) while building an interactive tool that lets you upload an image and compare their outputs side by side.

The post focuses on:

- What each algorithm is actually doing under the hood

- Where each one works well (and where it doesn’t)

- Why Canny feels “better” in many cases but costs more compute

- Practical tradeoffs rather than just theory

The tool runs entirely client-side, so no images are uploaded to a server.

Would love feedback from folks who’ve used these algorithms in production or teaching.

Most Git tutorials assume you’re an engineer, but with the rise in vibe coding tools, PM role is changing to a more collaborative builder role. Vibe coding PMs also need to understand branches, pull requests, code reviews, and how to collaborate effectively with dev teams. I put together a concise, no-nonsense guide that explains Git concepts using product-friendly examples and shows how PMs can use Git to vibe-code, explore repos, understand changes, and communicate better with engineers. Would love feedback from PMs, EMs, and devs: – What do PMs struggle with the most when learning Git? – Does this level of depth feel right? – What else should be added to make it truly useful in real workflows? Open to critique, improvements, and additional topic suggestions.

Many teams end up gluing their app to a background job queue through n8n webhooks, and then discover all the sharp edges: duplicate callbacks, mismatched job states, retries that corrupt data, and workflows that quietly stall under load.

This post walks through a pattern for wiring a custom job queue into n8n using webhook callbacks, with a focus on idempotency, explicit job state transitions, and failure recovery rather than “happy path” demos.

Curious how others are handling this in production: - How do you design your callback contracts and job state machine? - What patterns have worked (or failed) for idempotent callbacks and retries? - Any war stories from running webhook-heavy n8n (or similar) setups at scale?

I've seen too many comments on how production automation workflows fail silently or bring down entire systems when a single API call times out. Just published a guide covering the error handling, retry logic, and security patterns that prevent this:

Some problems: - Single unhandled error cascades through your entire workflow - No visibility into what failed or why - No automatic recovery from transient failures - Webhooks are wide-open security holes

General Solutions: - Centralized error workflows that capture full failure context - Exponential backoff retry logic - Try/Catch blocks for risky operations - Webhook authentication with HMAC validation

Also included: An interactive retry logic simulator, webhook security tester, and a complete production deployment checklist.

Would love feedback from HN on what else should be covered for production n8n deployments.

Thank you! Looking for feedback on what works what doesn't.

Thank you! Looking for feedback on what works what doesn't.

Thanks for the feedback! Yes, I have been thinking of creating a "How do I" or "Help" page. I have created small videos/GIFs of few features. Will embed them on the website.

This we app lets you format/edit/minify multiple json at the same time. With focus on various small productivity tricks like - 1. Copy a child object in a click 2. Copy minified string in a click 3. Remove common problems 4. Give a filename and download edited/formatted JSON in a click

BetterLoopy to autorepeat music videos - https://github.com/piyushsoni/BetterLoopyForYouTube

Hi All,

I have been working with large JSON objects quite a lot in recent past. One of the main problems I see with every online JSON formatter out there is that if I need to work with multiple JSON then I have to open multiple tabs and there was no way to keep track of where what is. I created jsontoolbox to scratch my own itch and may be help others who might have similar problems.

Here are some features -> 1. Format/Minify multiple JSON on the same page. 2. Copy a sub object/value in a single click. 3. Copy minified string in a single click on formatter. 4. Name every JSON and quickly download with same file name.

Hope this is useful for some one else as well. Looking for feedback.

-Sourabh

Looks neat! Nice design. Would be great to have an app for this.

Nope no overtime. Looking to develop such small demo apps because I have time constraint, might not be able to commit to second job.

Makes sense, I just need to find more people and charge now on.

Yes, sourabh86 at google mail

Does not seem to be a correct email. Am I missing something? mail me at sourabh86 at google mail?

Day job is usually not limited to 8 hours. Commute to work itself takes ~3 hours of my day. I've 3 other small android apps I need to support in my personal time. 8 extra hours doesn't seem plausible.

Connect over email?

That'd be great! Can I get an email address or something?

Sure will do!

Can give ~2 hours a day.

I have two android apps which depend on scraped data. I took permission in one case (good people at basecamp did not mind!) and did not require any permission for another because I was showing data only to the intended user (just in a handy way). My learning...Never be totally dependent on someone else's website/product. The second website went down around 15-20 days back because of some country wide server upgradation activity and my app installs/rating are going down since then. All those people who were giving 5 stars and praising the app are now abusing it with one star!

Lawsuits from people seeking help? Yes, open source is always an option, but there are a lot of people out there who need help on small things, specially startups. Where do they usually go?

Is it actually what it says? A few reviews on amazon say that the description is misleading.

THIS my friend.Awesome! I was planning to create something like since a long time. Thanks!

even on wfh.io some companies would write country as "Anywhere" but in the description you'd see "Candidates MUST be located in USA" for example https://www.wfh.io/jobs/789-android-developer-tripcraft

I have a problem to solve and an idea of how to solve it(at least that's what I think). Not sure whether it is the right time to build it (how do you define that? Isn't it always the right time?)

The Prabath Siriwardena book is too expensive. Any good cheaper alternatives out there?

looks nice! But why such a flowery Google forms page? Looks like I am registering for something else. Because you need only the email, try having an input form on the landing page itself, but if for some reason you want to have external forms, try out typeform.com (I am not associated with typeform in any way).