11/30/2022 0 Comments Mongodb uuid generator spring data![]() ![]() The IDs generated by this service are roughly time sortable. Twitter snowflake is a dedicated network service for generating 64-bit unique IDs at high scale. ![]() Moreover, you introduce one more component in your infrastructure that you need to manage and scale. The problem with this approach is that the ticket server can become a write bottleneck. This approach uses a centralized database server to generate unique incrementing IDs. But again the size is relatively longer than what we normally have in a single MySQL auto-increment field (a 64-bit bigint value). This is smaller than the earlier 128-bit UUID. a 3-byte counter, starting with a random value.MongoDB’s ObjectIDs are 12-byte (96-bit) hexadecimal numbers that are made up of. When your dataset increases, the index size increases as well and the query performance takes a hit. The problem with UUIDs is that they are very big in size and don’t index well. The chances of the same UUID getting generated twice is negligible. UUIDs are 128-bit hexadecimal numbers that are globally unique. I’ll also outline other existing solutions and discuss their pros and cons. In this article, I’ll share a simplified version of the unique ID generator that will work for any use-case of generating unique IDs in a distributed environment, not just sharded databases. So I looked at various existing solutions for this, and finally wrote a simple 64-bit unique ID generator that was inspired by a similar service by Twitter called Twitter snowflake. When you’re working with a single MySQL database, you can simply use an auto-increment ID as the primary key, But this won’t work in a sharded MySQL database. While working on this application, I needed to generate unique IDs that could be used as the primary keys in the tables. I was recently working on an application that had a sharded MySQL database. Generating unique IDs in a distributed environment at high scale Rajeev Singh System Design J3 mins read ![]()
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