Systems Meetup is happening tonight - Christmas Edition!
🕒 18:00 arrival (please be on time)
🎤 18:15 talks
🍕 19:15 pizza + drinks
📍 Cyberus Technology, Zwickauer Straße 46 - entrance in the back of the building ("Liefereingang")
🎄 Holiday sweaters welcome (Christmas edition!)
⚠️ Only for participants who registered before Monday (ask me if unsure)
because we reached our capacity limit.
[cid:f19bfbb9-3b2e-441c-be39-45dfab3c3c42]
Thanks! See you soon
--------------------------------------------------------
Philipp Schuster
Software Engineer
E-Mail: philipp.schuster(a)cyberus-technology.de
Cyberus Technology GmbH
Zwickauer Str. 46
01069 Dresden
Deutschland/Germany
Telefon: +49 175 431 6677 (Tor Lund-Larsen)
Web: https://www.cyberus-technology.de/
Geschäftsführer: Tor Lund-Larsen
Sitz der Gesellschaft: Dresden
Amtsgericht Dresden, HRB 36573
Hello all,
We’ve officially reached our limit of 40 attendees (including the host’s staff),
and I’m honestly blown away by how many of you want to join. Since we
can’t take any more registrations this time, please hold off on signing up - and
I really hope to see you at one of the next meetups!
More information soon.
Best
Philipp
--------------------------------------------------------
Philipp Schuster
Software Engineer
E-Mail: philipp.schuster(a)cyberus-technology.de
Cyberus Technology GmbH
Zwickauer Str. 46
01069 Dresden
Deutschland/Germany
Telefon: +49 175 431 6677 (Tor Lund-Larsen)
Web: https://www.cyberus-technology.de/
Geschäftsführer: Tor Lund-Larsen
Sitz der Gesellschaft: Dresden
Amtsgericht Dresden, HRB 36573
Hello everyone,
We’re excited to invite you to the final Systems Meetup of 2025, proudly hosted
by Cyberus Technology (Zwickauer Str. 46)!
When: Dec. 4th, 18:00–22:00 (please be on time)
Highlights:
* ⚡ Lightning Talks
* 📸 Year-in-review with photos
* 🍕 Pizza, 🍺 drinks & 🍷 seasonal Glühwein
👉 Register here: Sign up<https://cryptpad.fr/form/#/2/form/view/jiJXx6i+BJx6w9IWfhcc3uJubvo678B19023…>
We look forward to an exciting evening with you and wrapping up 2025 together!
Best regards,
Philipp
(Sorry for the many emojis but apparently this is how announcements are
supposed to look like in 2025 🙂)
--------------------------------------------------------
Philipp Schuster
Software Engineer
E-Mail: philipp.schuster(a)cyberus-technology.de
Cyberus Technology GmbH
Zwickauer Str. 46
01069 Dresden
Deutschland/Germany
Telefon: +49 175 431 6677 (Tor Lund-Larsen)
Web: https://www.cyberus-technology.de/
Geschäftsführer: Tor Lund-Larsen
Sitz der Gesellschaft: Dresden
Amtsgericht Dresden, HRB 36573
Hey there!
The next meetup will take place on Thu, December 4th, 18:00–22:00, at the
Cyberus Technology office. More information will follow in about six weeks.
Until then, enjoy the fall holidays - see you soon!
P.S. Regarding the previous meetup: Wow, what a blast! We had 45* attendees coming
from over 18 different affiliations - a new record! Thanks to Huawei for hosting!
*to be fair, 15 from our host Huawei
--------------------------------------------------------
Philipp Schuster
Software Engineer
E-Mail: philipp.schuster(a)cyberus-technology.de
Cyberus Technology GmbH
Zwickauer Str. 46
01069 Dresden
Deutschland/Germany
Telefon: +49 175 431 6677 (Tor Lund-Larsen)
Web: https://www.cyberus-technology.de/
Geschäftsführer: Tor Lund-Larsen
Sitz der Gesellschaft: Dresden
Amtsgericht Dresden, HRB 36573
Hello there,
Please sign up [0] for the next Dresden Systems at Huawei on Oct. 2nd, 18-22 o'clock!
It will be an in-person event at Am See 3, 01067 Dresden. We'd kindly ask you to arrive
on time (18:00-18:15). In case you come later, please leave a quick note on Matrix or by
email.
There will be talks, snacks, and drinks! See you soon!
PS: For the form, we use cryptpad.fr, which is an european-hosted and e2e-encrypted
open-source solution. Thanks to the tip from the community; this is our new alternative
for surveys to Google Forms.
[0] https://cryptpad.fr/form/#/2/form/view/SwQxtO0YK6PayDegSSrpJCbFlTKKTjTxB+o-…
--------------------------------------------------------
Philipp Schuster
Software Engineer
E-Mail: philipp.schuster(a)cyberus-technology.de
Cyberus Technology GmbH
Zwickauer Str. 46
01069 Dresden
Deutschland/Germany
Telefon: +49 175 431 6677 (Tor Lund-Larsen)
Web: https://www.cyberus-technology.de/
Geschäftsführer: Tor Lund-Larsen
Sitz der Gesellschaft: Dresden
Amtsgericht Dresden, HRB 36573
Hello,
This is a friendly reminder for our next Systems Meetup on Oct 2nd (Thursday 18:00-22:00).
In case you have an idea for an interesting talk (anything from 5-30min), feel free
to reach out to me and I'll put you on the list! Depending on the amount of submissions,
we might kindly ask you prior to the event to adjust the length of your talk - We will
let you know in good time!
Thanks!
Philipp
--------------------------------------------------------
Philipp Schuster
Software Engineer
E-Mail: philipp.schuster(a)cyberus-technology.de
Cyberus Technology GmbH
Zwickauer Str. 46
01069 Dresden
Deutschland/Germany
Telefon: +49 175 431 6677 (Tor Lund-Larsen)
Web: https://www.cyberus-technology.de/
Geschäftsführer: Tor Lund-Larsen
Sitz der Gesellschaft: Dresden
Amtsgericht Dresden, HRB 36573
Shipping a working app is great — keeping it working under real users is where the learning happens. Below are ten common production pitfalls I see again and again, with short, practical fixes you can apply today. If you want hands-on help turning these into code and deploy checks, consider mentor-reviewed full stack classes in Mumbai
or a project-first https://www.sevenmentor.com/full-stack-classes-in-mumbai
1. Missing health checks and smoke tests
Problem: Deploys succeed but core flows are broken.
Fix: Add GET /health and a simple smoke script that logs in, creates an item, and lists it. Run this automatically after deploys.
2. Secrets accidentally committed
Problem: API keys or DB URLs end up in git history.
Fix: Use .env files, commit only .env.example, and rotate any secret that was committed. Add a pre-commit hook (or a CI scan) that blocks credentials.
3. No deploy rollbacks or tags
Problem: Hard to revert a breaking release.
Fix: Tag releases (v1.2.0) and keep a one-line rollback procedure in your runbook (how to revert to previous tag and run smoke tests).
4. Slow list endpoints (no pagination / no indexes)
Problem: Lists time out with more data.
Fix: Implement server-side pagination (limit + cursor) and add an index matching your WHERE + ORDER BY (e.g., (user_id, created_at)).
5. Authentication edge cases
Problem: Refresh tokens, cookie domains, or SameSite flags break auth in prod.
Fix: Use secure HttpOnly cookies for refresh tokens, test the flow end-to-end in staging, and document cookie domain & SameSite settings in README.
6. No observability (logs & metrics)
Problem: You can’t tell what’s slow or failing.
Fix: Emit structured logs (reqId, route, duration_ms), capture p95 for key endpoints, and add a single alert (error rate or p95) to Slack/email.
7. Heavy synchronous work in request handlers
Problem: PDF generation, large uploads, or third-party calls slow user responses.
Fix: Move heavy work to background jobs/queues (BullMQ, Sidekiq). Keep request handlers fast and return accepted/202 for long tasks with a job ID.
8. Inconsistent API contracts between client & server
Problem: Front end crashes because the server returns a different shape than expected.
Fix: Keep a small API contract doc (/docs/api.md) and add one integration test that asserts the shape the UI depends on.
9. No rate limiting on public endpoints
Problem: Brute-force login attempts or abusive scraping.
Fix: Add IP/user rate limits to login and public APIs. Consider simple exponential backoff after repeated failures.
10. Poorly documented runbook & recovery steps
Problem: On-call becomes panic-mode because the “how to fix” is missing.
Fix: Write a one-page runbook: how to run smoke tests, how to rollback, where logs live, who to ping. Keep it in the repo as RUNBOOK.md.
Quick 7-point action list (do these right now)
Add GET /health and a CI smoke test.
Create .env.example and scan git history for secrets.
Add one DB index for your largest list query.
Add server-side pagination to all list endpoints.
Emit structured logs with reqId for every request.
Protect login with rate limiting and captcha fallback.
Write RUNBOOK.md with rollback steps and a smoke-test command.
Why mentorship speeds this up
Applying these fixes once is useful — applying them reliably across projects and explaining them in interviews is what gets you hired. If you want guided code reviews, deployment checks, and a mentor to walk through observability and runbooks, check out full stack classes in Mumbai
or enroll in a hands-on full stack classes in Mumbai
. They’ll help you add these protections to your portfolio projects so you can show production-ready work to recruiters.
Learn More: https://www.sevenmentor.com/full-stack-classes-in-mumbai
Shipping a working app is great — keeping it working under real users is where the learning happens. Below are ten common production pitfalls I see again and again, with short, practical fixes you can apply today. If you want hands-on help turning these into code and deploy checks, consider mentor-reviewed full stack classes in Mumbai
or a project-first <a href="https://www.sevenmentor.com/full-stack-classes-in-mumbai">full stack developer course in Mumbai</a>
1. Missing health checks and smoke tests
Problem: Deploys succeed but core flows are broken.
Fix: Add GET /health and a simple smoke script that logs in, creates an item, and lists it. Run this automatically after deploys.
2. Secrets accidentally committed
Problem: API keys or DB URLs end up in git history.
Fix: Use .env files, commit only .env.example, and rotate any secret that was committed. Add a pre-commit hook (or a CI scan) that blocks credentials.
3. No deploy rollbacks or tags
Problem: Hard to revert a breaking release.
Fix: Tag releases (v1.2.0) and keep a one-line rollback procedure in your runbook (how to revert to previous tag and run smoke tests).
4. Slow list endpoints (no pagination / no indexes)
Problem: Lists time out with more data.
Fix: Implement server-side pagination (limit + cursor) and add an index matching your WHERE + ORDER BY (e.g., (user_id, created_at)).
5. Authentication edge cases
Problem: Refresh tokens, cookie domains, or SameSite flags break auth in prod.
Fix: Use secure HttpOnly cookies for refresh tokens, test the flow end-to-end in staging, and document cookie domain & SameSite settings in README.
6. No observability (logs & metrics)
Problem: You can’t tell what’s slow or failing.
Fix: Emit structured logs (reqId, route, duration_ms), capture p95 for key endpoints, and add a single alert (error rate or p95) to Slack/email.
7. Heavy synchronous work in request handlers
Problem: PDF generation, large uploads, or third-party calls slow user responses.
Fix: Move heavy work to background jobs/queues (BullMQ, Sidekiq). Keep request handlers fast and return accepted/202 for long tasks with a job ID.
8. Inconsistent API contracts between client & server
Problem: Front end crashes because the server returns a different shape than expected.
Fix: Keep a small API contract doc (/docs/api.md) and add one integration test that asserts the shape the UI depends on.
9. No rate limiting on public endpoints
Problem: Brute-force login attempts or abusive scraping.
Fix: Add IP/user rate limits to login and public APIs. Consider simple exponential backoff after repeated failures.
10. Poorly documented runbook & recovery steps
Problem: On-call becomes panic-mode because the “how to fix” is missing.
Fix: Write a one-page runbook: how to run smoke tests, how to rollback, where logs live, who to ping. Keep it in the repo as RUNBOOK.md.
Quick 7-point action list (do these right now)
Add GET /health and a CI smoke test.
Create .env.example and scan git history for secrets.
Add one DB index for your largest list query.
Add server-side pagination to all list endpoints.
Emit structured logs with reqId for every request.
Protect login with rate limiting and captcha fallback.
Write RUNBOOK.md with rollback steps and a smoke-test command.
Why mentorship speeds this up
Applying these fixes once is useful — applying them reliably across projects and explaining them in interviews is what gets you hired. If you want guided code reviews, deployment checks, and a mentor to walk through observability and runbooks, check out <a href="https://www.sevenmentor.com/full-stack-classes-in-mumbai">full stack classes in Mumbai</a>
or enroll in a hands-on <a href="https://www.sevenmentor.com/full-stack-classes-in-mumbai">full stack classes in Mumbai</a>
. They’ll help you add these protections to your portfolio projects so you can show production-ready work to recruiters.
Hello there,
Thanks again to Amazon for hosting the great summer meetup!
The next Systems Meetup will be on October 2nd (Thursday 18:00-22:00)
at the Huawei office in Dresden. Mark your calendars!
A registration form will follow 1-2 weeks prior to the event.
See you soon! In the meantime, enjoy the last weeks of summer!
PS: Some attendees advocated for more "family-friendly" dates. Thank you
for that input and your feedback! Next year, we will try to look for dates
outside of the holidays, if possible. Further, events will not
always take place on a Thursday.
PPS: We are looking for hosts in 2026! 3-5 events: no more, no less.
PPPS: We had over 30+ attendees several times. That’s awesome! Thank you!
--------------------------------------------------------
Philipp Schuster
Software Engineer
E-Mail: philipp.schuster(a)cyberus-technology.de
Cyberus Technology GmbH
Zwickauer Str. 46
01069 Dresden
Deutschland/Germany
Telefon: +49 175 431 6677 (Tor Lund-Larsen)
Web: https://www.cyberus-technology.de/
Geschäftsführer: Tor Lund-Larsen
Sitz der Gesellschaft: Dresden
Amtsgericht Dresden, HRB 36573