All Questions
Tagged with java multithreading
457 questions
0
votes
0
answers
56
views
A parallel MSD radix sort in Java for long keys with near linear speedup
Intro
I have this implementation of a parallel MSD (most significant digit) radix sort. It runs in
$$\mathcal{O}\Bigg( \bigg(\frac{N}{P} + PB \bigg) \log_B \sigma\Bigg),$$ where \$N\$ is the length of ...
- 31k
6
votes
2
answers
858
views
ParallelSudokuSolver.java: solving semi-large Sudokus via multi-threading
Intro
This time, I have programmed a parallel sudoku solver in Java.
Code
io.github.coderodde.sudoku.ParallelSudokuSolver.java:
...
- 31k
3
votes
1
answer
119
views
Wait for results/failure of an unreliable async operation
Abstract Problem
The basic problem is that of producer/consumer. Wait for an async Producer to [produce an item] or [fail], together with a timeout on the consumer side.
Using Java's ...
- 131
4
votes
3
answers
181
views
Threads in Java with ExecutorService
I'm experimenting with Threads in Java and came upon the ExecutorService class.
I've written the following code:
...
- 617
2
votes
1
answer
85
views
Multithreaded Merge Sort Using ForkJoin Framework
I've implemented a multithreaded merge sort using Java's ForkJoin framework, and I wanted to gather feedback on its correctness, efficiency, and scalability.
Here's my implementation:
...
- 21
5
votes
2
answers
643
views
Thread-safe write-efficient register() method for a Load balancer
The code below was written for an interview question of designing a load balancer with only a register() method.
...
- 313
3
votes
1
answer
137
views
Amount Transfer Between Different Accounts - Improved Version
This is an improved code version for Amount Transfer Between Different Accounts
Welcoming any further improvements for this.
...
- 277
4
votes
1
answer
233
views
Amount Transfer Between Different Accounts
I implemented the below classes for transfer amount between different accounts. Used ConcurrentHashMap and Stamped Lock to handle concurrency.
Am I missing any important concepts here? Are there any ...
- 277
5
votes
2
answers
907
views
Reduce String Length With Thread Safety & Concurrency
I implemented the below URL Shortener class. Used ConcurrentHashMap to handle concurrency.
Short URL building logic may not be optimal, but it ensures that only ...
- 277
4
votes
2
answers
479
views
Implement service registry servers with load balancing strategies
Have Implemented below service registry class with 2 load balancing strategies.Used Strategy Pattern. Used Stamped lock ( Optimistic write locking) for ensuring thread safety and concurrency. Used ...
- 277
2
votes
2
answers
146
views
A thread-safe performant Money Transfer API in Java
This is a popular interview question. It is meant to be done within 30 minutes. The task is to implement a thread-safe performant Bank Account API that allows to transfer, deposit, withdraw and check ...
- 343
4
votes
1
answer
107
views
Multithreaded Alpha-beta pruning for playing Connect Four in Java
Intro
(The entire repository is in GitHub.)
This time, I have parallelized the famous Alpha-beta pruning algorithm. The idea is that the parallel algorithm descends in a game tree (at least) 2 levels ...
- 31k
7
votes
2
answers
1k
views
A thread-safe performant URL Shortener in Java
This is a popular interview question. It is meant to be done within 45 minutes. The task is to implement a thread-safe performant in-memory URL Shortener.
My implementation is based on two maps that ...
- 343
5
votes
3
answers
130
views
Time based cache for single element
The container should be thread safe and provide lazy load of data, and cache the data for set period of time.
...
- 151
2
votes
2
answers
149
views
Multiple Producer and Multiple Consumer Implementation Using Locks and Semaphore
This solution has a total of four classes.
Main.java: Class with main method. Execution starts here.
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- 121