文件列表:

screenshots (0, 2021-03-18)
screenshots\Blockchain in sync.png (170114, 2021-03-18)
screenshots\Client request fulfilled.png (69381, 2021-03-18)
screenshots\Database in sync.png (174133, 2021-03-18)
screenshots\Restore from backup.png (73406, 2021-03-18)
screenshots\Server handling requests.png (83700, 2021-03-18)
src (0, 2021-03-18)
src\blockchain.py (4961, 2021-03-18)
src\client.py (2221, 2021-03-18)
src\constants.py (2057, 2021-03-18)
src\dictionary.py (1322, 2021-03-18)
src\main.py (4434, 2021-03-18)
src\messages.py (12832, 2021-03-18)
src\server.py (7630, 2021-03-18)

# Paxos Database Fault-tolerant decentralized database using the Multi-Paxos consensus algorithm. ## Description This is a distributed key-value database in Python with full replication across nodes. It uses the Multi-Paxos algorithm to reach consensus among server nodes, and as long as a majority are live, the system can make progress and service requests. The data is backed by private blockchain and disk backup to prevent tampering and ensure fault-tolerance. There are separate server and client nodes, so some users (clients) can interact with the database without hosting any data. All requests are queued and serialized to prevent race conditions and forks. Paxos leader election only takes place at startup or when a leader is unreachable, so the round is generally skipped during normal operation, allowing the system to process more requests. Nodes keep track of the leader and forward requests, so requests can be made from any endpoint (requester address is saved in order to return the result to the original sender). Nodes detect discrepancies among their peers and send data to new nodes and revived nodes for resynchronization. ## Screenshots

Blockchain synchronized across nodes


Database synchronized across nodes


Data automatically restored from file backup


Client data retrieval request fulfilled


Server node (non-leader) log while servicing requests

近期下载者：

相关文件：

评论：[我要评论] [举报此文件]

收藏者：