Two Phase Commit (2PC)

 Two-Phase Commit (2PC)

A special object, known as a coordinator, is required in a distributed transaction. As its name implies, the coordinator arranges activities and synchronization between distributed servers. The two-phase commit is implemented as follows:
Phase 1 - Each server that needs to commit data writes its data records to the log. If a server is unsuccessful, it responds with a failure message. If successful, the server replies with an OK message.
Phase 2 - This phase begins after all participants respond OK. Then, the coordinator sends a signal to each server with commit instructions. After committing, each writes the commit as part of its log record for reference and sends the coordinator a message that its commit has been successfully implemented. If a server fails, the coordinator sends instructions to all servers to roll back the transaction. After the servers roll back, each sends feedback that this has been completed.


Comments

Post a Comment

Popular posts from this blog

Robotic Process Automation

  Robotic Process Automation (RPA) is the application of technology that provides organizations with a digital workforce that follows rule-based business processes and interacts with the organisations systems in the same way that existing users currently do   Robotic process automation (or RPA) is an emerging form of clerical process automation technology based on the notion of software robots or artificial intelligence (AI) workers.   Robotic Process Automation (RPA) is software robot.  Once you setup. Hence no human interaction is required. which helps the organization to cut down the cost, quick delivery and improve the quality of the application   Automate process - augment the work  data flow will be faster  digitial the process (bpo) application Loan approval process - review, current balance, check credit score, finally approve/disapprove. the move of the another application.  It is following the rules. Audit log create . Whoever got the disapproval of t
Read more

WorkFusion

WorkFusion Overview Bot Classification Our bots address a wide range of automation challenges. To characterize them, WorkFusion developed a taxonomy that describes the complexity and stability of automatons. WorkFusion Automation Complexity Levels Complexity Level, Description 1 API Automation (APIs, File Exchange, Database, ETL) 2 Web Scraping and Crawling (static web applications/sites ) 3 Web Automation (dynamic web applications/sites) 4 Desktop Automation (legacy applications like mainframe, applets, Windows-native applications) 5 Surface Automation (screen-only tools, image recognition) 6 Cognitive Automation (unstructured data) 7 Conversational Automation Bot Development Approach You will find a variety of pre-developed bot tasks available, right out of the box. These tasks are configurable to suit individual use cases. To enhance a bot task or create a new one, both the Web-Harvest library and the Groovy scripting language are available. WorkFusion has pre-defined Web-Ha
Read more

7 Rules of Success A.P.J Abdul Kalam

Image
A.P.J Abdul Kalam   1.    Work with courage/bravery 2.    Be Unique Be you a.      Set the goal, Acquire the knowledge continuously, Hard work with devotional & Perseverance 3.    Culture of excellence a.      Set the performance standard by themselves, they work on their dreams with focus and are prepared take calculated risk and do not get deterred (discourage) by failures as they move towards their dreams then they step up their dreams as they tend to reach the original targets they strive to work to their potential in the process they increase their performance they by multiplying further their potential this is an onion ting/ring lifecycle phenomena/wonder. They are not in competition with genuine art but themselves. 4.       Leader must be explorer - Leader should travel in an unexploded paths 5.       Knowledge makes you great . a.      Knowledge is creativity, righteousness/honest and courage. Learning gives creativity, crea
Read more