Past fifty years the golden earring in her ear has the same glint
The sprint is now a bent walk
The heart beats slower and the kidney back outs
Fantastically, the smile retains the beautiful bent
The twinkling crescent in the eye makes the populace relent
I remember her as the energetic soul
For whom service to everyone was a divine parol
The radiant smile and the gaily gait
She wooed everyone with her selfless trait
She has always had a strong-willed mind
A person so delightful as my grandma is hard to find
This article aims to cover what is quorum consistency, why do we need it and it’s limitations in case of multiple replica system.
“The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at or repair.”
Douglas Adams, Mostly Harmless (1992)
Quorum consistency is used in systems where consistency is more important than availability (CAP theorem) for write and read but we still want a fairly available system.
In systems with multiple replicas there is a possibility that the user reads inconsistent data. This happens say when there are 2 replicas, N1 and N2 in a cluster and a user writes value v1 to node N1 and then another user reads from node N2 which is still behind N1 and thus will not have the value v1, so the second user will not get the consistent state of data. …
The walls come closer and crushed I am
I’ve lost my voice but a shrieking noise I hear
Dismal images dawn my mind
My life is obsolete
My boons are my banes
Fantastically, my hope still reigns
I reach for a friend in that inferno and I feel a hand
An explicable sensation hits my heart
With a smile I look down
Both my hands are holding each tight
I’ve found my eternal friend
My partner for life
This is a basic introduction to what is a Shadow DOM and how ,when and why to use a Shadow DOM.
In simple words, it’s a DOM inside a DOM.
Using Shadow Dom, you can attach a separate DOM tree which is hidden and encapsulated to any element. This is very helpful to achieve encapsulation in web components.