We are trying to make up our own

id

in a

collection

It will be something look like this:

pID:3f713ab6-a0b9-4e8e-9089-184c53d4c298 tID: 1 id: 1

so it will be very readable to our developers. And in our application, we will use that

id

to find the document and to

upsert

. My question is if we use that kind of id with leading letter always starts with

p

, will that affect the speed? Or do you recommend an

id

that starts with random character? Thank you!

That won't be a problem, feel free to use that prefix.