Duplicate Ids in a two instance microservice about idgen

[minhhungit]

I think you should use only 1 instance, I got this kind of issue before due to multi IIS worker
If you use multi instance, try to setup difference generatorID for your instances

[RobThree]

IdGen is meant to be used as singleton (or as transient with guaranteed unique generatorid). If you're getting duplicate ID's then you're most likely using multiple instances with the same generator id.

See #33 or #26 for example,

Also see our fresh new addition: FAQ

[dimitkos]

Because it is not clear to me, do you mean for example in the first instance of microservice to use for example UniqueIdGenerator.Configure(0);
and in the second instance of the microservice a different int like
UniqueIdGenerator.Configure(1);
in the program.cs class?

[RobThree]

Yes; if you have multiple instances they each need their own GeneratorID; they don't "know" about eachothers existence (hence the 'uncoordinated' part*) and start generating ID's on their own. The only thing preventing collisions (duplicates) is each relying on having their own GeneratorId. But, if at all possible, I'd just use a singleton instance.

* That coordination is what you're supposed to do by either making sure each generator gets it's own GeneratorId or by just using a single instance.