What is a Fault-Tolerant Service?
A fault-tolerant service is a service that continues to function correctly even if some internal component is failing.
A fault-tolerant service is a service that continues to function correctly even if some internal component is failing.
Lessons from Ritu Vincent, a Staff Engineer at Dropbox:
In this post I’m gonna share a concept called Fencing Tokens, which I learned from the book Designing Data-Intensive Applications.
Fencing tokens is a mechanism that is used to protect against faulty writes to storage systems that happen in distributed systems.
Let’s take an example. Suppose we have a storage resource (file, DB) and two nodes (A, B) that want write to this storage. Node A acquires the lock to write to this storage from a Lock Service. The Lock Service issues the lock based on a time-lease, which means that a node can have the lock only for fixed amount of time and then it expires. Now Node A has the lock and can start writing, however unfortunately it goes into a Garbage Collection (GC) cycle, at this point Node A has the lock, unresponsive and basically waiting for the GC cycle to finish.
Lessons from Katie Sylor-Miller, a Frontend Architect at Etsy:
Here is a list of startup and VC conferences happening in Berlin in 2022 / 2023 that might interest entrepreneurs or senior executives looking for networking opportunities in Berlin, or even for senior product managers looking to see what’s new being built out there.