pg-promise - Promises/A+ interface for PostgreSQL

•    Javascript

Promises interface for PostgreSQL

node_redis - redis client for node

•    Javascript

Redis client library

cointrol - ฿ Bitcoin trading bot with a real-time dashboard for Bitstamp.

•    Python

Cointrol is a Bitcoin trading bot and real-time dashboard for Bitstamp created by @jakubroztocil.Cointrol was created to automate Bitcoin speculation. Besides automated trading based on price change triggers and various trading strategies, it also provides a real-time updated dashboard for your Bitstamp account where you can see all your orders and transactions real-time updated (something Bitstamp lacks). The dashboard for a real-time updated overview can also be used standalone without letting Cointrol make any transactions.

CAP - CAP is a library based on

•    CSharp

CAP is a library based on .Net standard, which is a solution to deal with distributed transactions, also has the function of EventBus, it is lightweight, easy to use, and efficiently.In the process of building an SOA or MicroService system, we usually need to use the event to integrate each services. In the process, the simple use of message queue does not guarantee the reliability. CAP is adopted the local message table program integrated with the current database to solve the exception may occur in the process of the distributed system calling each other. It can ensure that the event messages are not lost in any case.

snappydata - SnappyData - The Spark Database. Stream, Transact, Analyze, Predict in one cluster

•    Scala

Apache Spark is a general purpose parallel computational engine for analytics at scale. At its core, it has a batch design center and is capable of working with disparate data sources. While this provides rich unified access to data, this can also be quite inefficient and expensive. Analytic processing requires massive data sets to be repeatedly copied and data to be reformatted to suit Spark. In many cases, it ultimately fails to deliver the promise of interactive analytic performance. For instance, each time an aggregation is run on a large Cassandra table, it necessitates streaming the entire table into Spark to do the aggregation. Caching within Spark is immutable and results in stale insight. At SnappyData, we take a very different approach. SnappyData fuses a low latency, highly available in-memory transactional database (GemFireXD) into Spark with shared memory management and optimizations. Data in the highly available in-memory store is laid out using the same columnar format as Spark (Tungsten). All query engine operators are significantly more optimized through better vectorization and code generation. The net effect is, an order of magnitude performance improvement when compared to native Spark caching, and more than two orders of magnitude better Spark performance when working with external data sources.

cetus - 专注于稳定、性能和分布式事务的MySQL数据库中间件

•    C

专注于稳定、性能和分布式事务的MySQL数据库中间件

Raincat - 2PC分布式事务中间件（Implement by 2 pc）

•    Java

2PC分布式事务中间件（Implement by 2 pc）

sharding-sphere - Distributed database middleware

•    Java

Distributed database middleware ecosphere

bitcore - A full stack for bitcoin and blockchain-based applications

•    Shell

Bitcore is a infrastructure to build Bitcoin and blockchain-based applications for the next generation of financial technology. It is a full bitcoin node, your apps run directly on the peer-to-peer network. For wallet application development, additional indexes have been added into Bitcoin for querying address balances, transaction history, and unspent outputs.

Narayana - Open Source Transaction Manager

•    Java

Narayana is the premier open source transaction manager. It has been used extensively within industry and to drive standards including the OMG and Web Services. The Narayana transaction suite protects businesses from data corruption by guaranteeing complete, accurate business transactions for Java based applications. It has built in failure recovery components that handle failures automatically with no manual intervention required.

tidis - Distributed transactional NoSQL database, Redis protocol compatible using tikv as backend

•    Go

Tidis is a Distributed NoSQL database, providing a Redis protocol API (string, list, hash, set, sorted set), written in Go. Tidis is like TiDB layer, providing protocol transform and data structure compute, powered by TiKV backend distributed storage which use Raft for data replication and 2PC for distributed transaction.

Learning-Bitcoin-from-the-Command-Line - The best way to learn to learn deeply about bitcoin is to avoid GUIs (even bitcoin-qt), and instead learn it from the command line

•    Shell

This is a tutorial for working with Bitcoin (and Lightning) that teaches direct interact with the severs themselves, as the most robust and secure way to begin cryptocurrency work. NOTE: This is a draft in progress, so that I can get some feedback from early reviewers. It is not yet ready for use.

transient - A full stack, reactive architecture for general purpose programming

•    Haskell

It's a bit mind bending in that it's like using a higher-level list monad, but it's very, very cool. For beginning Haskellers, what would be really useful is a visualisation of what happens when you do various distributed/parallel stuff. It's almost shocking how effortlessly you can run computations across threads/nodes. The cool part is the composability in the distributed setting. You can make higher-order monadic functions that allow you to compose & reuse a long chain of distributed transactions via wormhole and teleport. Another benefit is that the transaction becomes first class and you can see exactly what's going on in one place instead of distributing the logic across actors making the code equivalent to event callbacks, as you've stated.

memdb - Distributed Transactional In-Memory Database (全球首个支持分布式事务的MongoDB)

•    Javascript

Copy default config file from node_modules/memdb-server/memdb.conf.js to ~/.memdb/ (mkdir if not exist), and modify it on your need. Please read comments carefully. See the video bellow, note how ACID transaction work cross multiple shards.

bitcore-lib - A pure and powerful JavaScript Bitcoin library

•    Javascript

A pure and powerful JavaScript Bitcoin library.Bitcoin is a powerful new peer-to-peer platform for the next generation of financial technology. The decentralized nature of the Bitcoin network allows for highly resilient bitcoin infrastructure, and the developer community needs reliable, open-source tools to implement bitcoin apps and services.

transity - Keep track of your 💵, 🕘, 🐖, 🐄, 🍻 on your command line

•    PureScript

The plain text accounting tool of the future. Keep track of your 💵, 🕘, 🐖, 🐄, 🍻 on your command line. List complete usage manual by simply calling transity without any arguments.

web3swift - Elegant Web3js functionality in Swift

•    Swift

Web3swift requires Swift 4.1 and iOS 9.0 or macOS 10.13 although we recommend to use the latest iOS and MacOS versions for your own safety. Don't forget to set the iOS version in a Podfile, otherwise you get an error if the deployment target is less than the latest SDK. Carthage is a decentralized dependency manager that builds your dependencies and provides you with binary frameworks.

quick-pomelo - A Much Better Pomelo Game Server Framework (网易Pomelo框架深度优化版)

•    Javascript

Quick-pomelo is based on pomelo, have a draft idea of pomelo framework is required. Quick-pomelo use memdb for underlaying data storage, so understanding memdb is required.

Hermes Distribution Framework

A framework for implementing transactional file systems.

ISO Analyzer

GISO (GNU ISO) is a tool that makes it easier to analyze ISO 8583 financial transactions and also provides a platform to create a host simulator, capable of receiving requests and sending back the responses. It’s a WinForms application and it’s developed using C#.