Скачать или смотреть optimistic vs pessimistic locks | Hindi | Concurrency Control | High Level Design |

optimistic vs pessimistic locks | Hindi | Concurrency Control | High Level Design |

In this video, we dive deep into concurrency control and deadlocks in both DBMS and distributed systems, which are frequently asked topics in system design interviews and high level design interviews. Understanding shared locks, exclusive locks, and lock based protocols in DBMS is critical for handling concurrent writes and ensuring data consistency.

0:00 Introduction
1:00 Amdah's law for queuing concurrency
9:18 Contention
17:05 Techniques to improve locking performance
20:20 pessimistic abd optimistic locks
13:40 Conclusion


During high level design interviews and LLD/HLD interview questions, you may be asked how to implement optimistic concurrency control or pessimistic concurrency control in a real-world system. Topics like two phase locking (2PL), transaction and concurrency control in DBMS, and isolation levels such as read uncommitted, read committed, repeatable read, and serializable are key areas where interviewers test your understanding of shared exclusive locks in database and how to prevent dirty read, non-repeatable read, phantom read, or lost update problems.

We will also explain lock based protocols in depth, including compatibility of shared and exclusive locks, and how these protocols are applied in modern distributed systems using distributed locks. This session will help you answer questions in system design interviews, high level design interviews, and DBMS concurrency control questions with confidence.

👉 Concurrency control in DBMS and distributed systems:
Concurrency control ensures that multiple transactions can execute simultaneously without violating data integrity. In this video, we cover lock based protocols in DBMS, shared locks and exclusive locks, and how optimistic locking and pessimistic locking differ. We also explain transaction and concurrency control in DBMS for GATE and real-world systems.

By mastering these concepts, you will understand how to prevent deadlocks during concurrent writes, implement distributed locks, and design high level systems that are robust and scalable. System design interviews often include questions about DB locking for concurrency, handling lost updates, and ensuring serializable isolation levels, which we cover with examples and diagrams.

This video is perfect for LLD interview questions, HLD interview questions, and anyone preparing for system design interviews, high level design interviews, or exams like GATE. You’ll gain a solid understanding of lock based protocols, shared and exclusive locks, two phase locking (2PL), transaction and concurrency control in DBMS, optimistic concurrency control, pessimistic concurrency control, and common problems like dirty read, non-repeatable read, phantom read, and lost update problem.

By the end of this session, you will be able to:
✔ Explain lock based protocols in database management systems and distributed locks.
✔ Handle concurrent writes safely using shared locks and exclusive locks.
✔ Implement optimistic locking and pessimistic locking strategies in high level design interviews.
✔ Solve transaction and concurrency control problems in DBMS.
✔ Confidently answer questions on deadlocks, isolation levels, and two phase locking (2PL) in system design interviews.

Don’t forget to like, share, and subscribe for more system design interview prep, high level design interviews, and DBMS concurrency control tutorials. This video is part of our comprehensive HLD & LLD playlist, covering concurrency, distributed locks, deadlocks, transactions, and lock based protocols in depth.

Your Queries:
#SystemDesign
#SystemDesignInterviews
#HighLevelDesignInterviews
#ConcurrencyControl
#ConcurrencyControlInDistributedSystem
#DBMS
#Transaction
#SharedLock
#ExclusiveLock
#LockBasedProtocolInDBMS
#SharedAndExclusiveLocks
#TransactionAndConcurrencyControlInDBMS
#OptimisticConcurrencyControl
#PessimisticConcurrencyControl
#IsolationLevels
#DirtyReadProblem
#NonRepeatableRead
#PhantomRead
#LostUpdateProblem
#TwoPhaseLocking
#2PL
#LLDInterviewQuestion
#HLDInterviewQuestion