Distributed Lock Manager

The DLM maintains a list of system resources and provides locking mechanisms to control allocation and modification of resources.

Installation

npm install -g distributed-lock-manager

Usage

dlm-server --httpPort 5000 --tcpPort 5001 --maximumWaitForAcquireInMilliseconds 2000 --timeoutInMiliseconds 5000

Screenshot

Commands

Acquire

This command will try to acquire the lock for the given name and return TRUE<newline> when successfully acquired and FALSE<newline> when not acquired.

acquire <name><newline>

Release

This command will release the lock for the given name and return OK<newline>.

release <name><newline>

Wait Acquire

This command is exactly the same as the acquire command except that it will wait if it could not acquire the lock immediately.

waitAcquire <name><newline>

Client Libraries

• DistributedLockManager.NET (.NET Core)
• distributed-lock-manager-node (node.js)

Performance

Acquire

• Mean: 2.907 ms
• Median: 3 ms
• Standard Deviation: 1.4595
• 95th Percentile: 5 ms

Release

• Mean: 2.829 ms
• Median: 3 ms
• Standard Deviation: 1.5325
• 95th Percentile: 5 ms