Decoding ids

[d3bt3ch]

From the FAQ decoding random IDs can sometimes produce the same numbers. What are the odds, because we are planning to use sqids to stringify our long ids in json output. If two ids decodes to the same long then it could be a problem.

[0x3333]

If the IDs you generated are using the same parameters, they can't collide, they are unique.

The FAQ is regarding a random generated ID, like brute-force, etc. The algorithm is not cryptographically secure.

[4kimov]

The odds don't really matter, because you should always check incoming IDs by re-encoding decoded numbers to see if original ID matches. That's how you would know if it's valid or not. https://sqids.org/faq#valid-ids