Showing posts with label synergy. Show all posts
Showing posts with label synergy. Show all posts

Thursday, November 16, 2017

Replicated Object. Part 3: Subjector Model

Parallel execution

Preface

This article is a continuation of the series of articles about asynchrony:

  1. Asynchronous Programming: Back to the Future.
  2. Asynchronous Programming Part 2: Teleportation through Portals.

After 3 years, I have decided to expand and generalize the available spectrum of asynchronous interaction based on coroutines. In addition to these articles, it is also recommended to read the article related to god adapter:

  1. Replicated Object. Part 2: God Adapter.

Introduction

Consider an electron. What do we know about it? A negatively charged elementary particle, a lepton having some mass. This means that it can participate in at least electromagnetic and gravitational interactions.

Saturday, August 19, 2017

Kinetics of Large Distributed Clusters

Summary

  1. Martin Kleppmann's fatal mistake.
  2. Physicochemical kinetics does mathematics.
  3. The half-life of the cluster.
  4. We solve nonlinear differential equations without solving them.
  5. Nodes as a catalyst.
  6. The predictive power of graphs.
  7. 100 million years.
  8. Synergy.

In the previous article, we discussed in detail Brewer's article and Brewer's theorem. This time we will analyze the post of Martin Kleppmann "The probability of data loss in large clusters".

In the mentioned post, the author attempts to simulate the following task. To ensure the preservation of data, the data replication method is usually used. In this case, in fact, it does not matter whether erasure is used or not. In the original post, the author sets the probability of dropping one node, and then raises the question: what is the probability of data loss when the number of nodes increases?

The answer is shown in this picture:

Data loss