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Paper Notes: Cassandra- A Decentralized Structured Storage System
Cassandra is a distributed storage system that focusses on providing a highly scalable & available service for storing very large…
Category: Database
6 min read
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Transactions: Serializable Snapshot Isolation
Working with various isolation levels, we have seen a compromise being done between getting things correct and getting things fast.…
5 min read
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Transactions: Two-phase Locking
Two-phase locking(2PL for short) is one of the most well-known algorithm for serializability. Note that it is totally different concept…
6 min read
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Transactions: Introduction to serializability techniques
So far we have seen various problems that arise with concurrent transactions and how different approaches try to tackle them(and…
6 min read
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Transactions: Write skew & why we need serialization?
Up until now we have seen various problems that can arise due to concurrent request for both read as well…
4 min read
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Transactions: Tackling lost updates
As part of read committed isolation and snapshot isolation, we primarily focussed on tactics to ensure correctness of reads in…
6 min read
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Transactions: Snapshot Isolation
In our previous post we covered read committed isolation level. Read committed isolation level ensures that: We cannot perform reads…
4 min read
1
Transactions: Read committed isolation
Ensuring that each resource is accessed and modified by a single user at a time is very complex on the…
6 min read
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Transactions: Atomicity & Isolation
In last post, we saw the use case of why we need transactions to maintain a consistent state of our…
6 min read
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Transactions: Why we need all or nothing?
In real life applications, things can go wrong for scenarios which you have never considered while designing the application. These…