2 months ago
Hi,
I have authorization from the owner of an application hosted on Railway to perform controlled performance/load testing.
The application is expected to serve approximately 5,000–10,000 users. We plan to use k6 and gradually increase the load while monitoring application performance and Railway resource usage.
The test will target only our application’s endpoints. We will not perform DoS/DDoS testing, test Railway infrastructure, or intentionally cause service disruption.
Before running the test, could you please confirm whether this type of controlled load testing is permitted on Railway and whether there are specific limits or recommendations regarding:
- Maximum requests per second (RPS)
- Maximum concurrent virtual users/connections
- Test duration
- Recommended ramp-up rate
- Whether Railway needs advance notification
Thank you.
Pinned Solution
2 months ago
can't speak for railway on permission or notification, that's staff, but the published limits cover most of your list:
10,000 concurrent connections
~11,000 RPS per domain
10,000 requests per connection
https://docs.railway.com/networking/public-networking/specs-and-limits same page says email team@railway.com for higher limits, probably the right channel for advance notice too.
at 5-10k users you're well under those, so your app's CPU/memory will be the bottleneck, not railway's edge.
two things before you run it:
make sure Under Attack Mode is off, it puts a browser challenge in front of every request and k6 can't pass it, so you'd be measuring blocks not performance: https://docs.railway.com/networking/waf
keep connection reuse on in k6, idle HTTP/1.1 connections close after 60s and each is capped at 10k requests, so disabling keep-alive will chew through the connection limit faster than you'd expect.
14 Replies
2 months ago
This thread has been opened as a bounty so the community can help solve it.
Status changed to Open Railway • about 2 months ago
2 months ago
why it is a bounty? It is just a question
why it is a bounty? It is just a question
2 months ago
That means this thread is open to the community so this thread will be picked up and answered sooner
mayori
That means this thread is open to the community so this thread will be picked up and answered sooner
2 months ago
and someone who answers gets 10$ ? If it is like that, I already like this platform
2 months ago
what happens if two guys make agreement they post threads that they already know answers? And they just answer them? How do you prevent such a scam?
mayori
That means this thread is open to the community so this thread will be picked up and answered sooner
2 months ago
.
what happens if two guys make agreement they post threads that they already know answers? And they just answer them? How do you prevent such a scam?
2 months ago
why would two guys want to do that??
manuproject
why would two guys want to do that??
2 months ago
make some money for nothing?
make some money for nothing?
2 months ago
or even one guy with 2 accs :/
or even one guy with 2 accs :/
2 months ago
or even guy with temp disposable emails who just makes accounts and answers them :\
2 months ago
the bounty program has been on for a while so i dont think someone will do that i dont know do you need your problem to be solved
what happens if two guys make agreement they post threads that they already know answers? And they just answer them? How do you prevent such a scam?
2 months ago
Payouts aren't done automatically, the solution provided will be marked as pending to be reviewed by mods or team, If the solution is valid then the solution will be approved for payout
manuproject
the bounty program has been on for a while so i dont think someone will do that i dont know do you need your problem to be solved
2 months ago
I want answer for my thread question because it’s important for me, but sometimes one question brings 5 more
mayori
Payouts aren't done automatically, the solution provided will be marked as pending to be reviewed by mods or team, If the solution is valid then the solution will be approved for payout https://docs.railway.com/community/bounties
2 months ago
thanks for the answer
I want answer for my thread question because it’s important for me, but sometimes one question brings 5 more
2 months ago
can't speak for railway on permission or notification, that's staff, but the published limits cover most of your list:
10,000 concurrent connections
~11,000 RPS per domain
10,000 requests per connection
https://docs.railway.com/networking/public-networking/specs-and-limits same page says email team@railway.com for higher limits, probably the right channel for advance notice too.
at 5-10k users you're well under those, so your app's CPU/memory will be the bottleneck, not railway's edge.
two things before you run it:
make sure Under Attack Mode is off, it puts a browser challenge in front of every request and k6 can't pass it, so you'd be measuring blocks not performance: https://docs.railway.com/networking/waf
keep connection reuse on in k6, idle HTTP/1.1 connections close after 60s and each is capped at 10k requests, so disabling keep-alive will chew through the connection limit faster than you'd expect.
Status changed to Solved Anonymous • about 2 months ago