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14
votes
8answers
1k views

What exactly is distributed computing?

So I'm a senior in college and a couple of weeks ago, I interviewed at Microsoft for an entry-level SDE position. While most of the interviews (out of the total 7) were on the general principles of ...
13
votes
1answer
3k views

What are the solutions to the Distributed Queue problem?

I am trying to learn more about the various ways that the problem of a Distributed Queue may be solved. So I would like know what products, services, implementations and research papers that are ...
10
votes
3answers
4k views

Good books to learn distributed computing [closed]

Are there any good books to learn about distributed computing ? I work on large scale java applications. Recently my colleagues started talking about things like distributed cache, load balancing, ...
8
votes
4answers
1k views

How do I get into a career in distributed systems?

I am enamored by reliable distributed systems and want to spend my career improving them rather than merely using them to write the same CRUD applications over and over. What experience will convince ...
8
votes
2answers
506 views

Is there a canonical book on distributing computing in Java? [closed]

I have spent the last 2-1/2 years building a distributed application. We started testing it a couple months ago and we're moving it into production. Everything runs fairly well, but it could ...
7
votes
3answers
2k views

MapReduce explained with diagrams?

I'm searching for an explanation of how MapReduce works with visuals. Specifically, a flow chart of actions and pictures of how it deals with information on the stack/memory in parallel to return. ...
7
votes
3answers
277 views

Optimistic work sharing on sparsely distributed systems

What would a system like BOINC look like if it were written today? At the time BOINC was written, databases were the primary choice for maintaining a shared state and concurrency among nodes. Since ...
7
votes
1answer
320 views

What logic is used to control Lock and Update actions in P2P networks? (similar to Bitcoin)

Bitcoin relies on Proof of Work (hashing) to control the writing to a central repository (the blockchain). It also relies on a set of rules for these updates, and defines what happens if a conflict ...
6
votes
3answers
906 views

Distributed Issue Tracking

Distributed issue tracking seems like a belting idea to me, but it has never really taken off in a big way. Is there a good reason for that? I am aware of: bugz everywhere too complex to set up ...
5
votes
4answers
419 views

How to effectively (but minimally) *simulate* a distributed computing environment?

I am doing some personal research on Byzantine Faults. I am trying out algorithms from various research papers which present algorithms for consensus in distributed systems like this one. For this i ...
5
votes
1answer
615 views

Best practice for handling asynchronous inter communication?

Recently completed a project for handling credit card processing. One of the difficulties I faced was handling the delay / possible failure of notification messages. The most complex example was: an ...
5
votes
1answer
365 views

Gossip protocol in a Ring topology

I am implementing a gossip based membership detection mechanism. Lets say we have a ring topology, i.e. node1 only knows about the 2 nodes (node4 and node2) around it. node1 ...
4
votes
1answer
54 views

Is there any technology for dynamic assignment of execution context for programs that target many platforms with widely varying runtime performance? [closed]

This may very well be nothing new and probably exists, but I've never learned about it and would like to. The simplest way to be more specific is just to give an example. I was on the bus and ...
4
votes
2answers
753 views

How to implement a lightweight clustered architecture for a distributed application

I currently have a distributed application that runs on multiple embedded PCs. The whole application is composed of one master server and several nodes. Each node is an embedded PC that runs Windows 7 ...
4
votes
1answer
626 views

Design patterns for multi-threaded messaging server

I'm designing an instant messaging server as a personal exercise to improve my understanding and application of multi-threading and design patterns in Java. I'm still designing, there's no code yet. ...
3
votes
1answer
323 views

Is it possible to modify Lamport's mutual exclusion algorithm to work without a FIFO guarantee?

I'm trying to implement a modified version of the Lamport Mutual Exclusion algorithm. The original algorithm assumes FIFO message ordering between connected systems, but I would like to use UDP a ...
3
votes
3answers
754 views

Making a virtual supercomputer with distributed P2P computing

I was just having this idea once and wondering if there's any possibility to harness the power of p2p distributed computing to make a virtual supercomputer with the following features: Works like a ...
3
votes
1answer
121 views

Use a custom value object or a Guid as an entity identifier in a distributed system?

tl;dr I've been told that in domain-driven design, an identifier for an entity could be a custom value object, i.e. something other than Guid, string, int, etc. Can this really be advisable in a ...
2
votes
3answers
439 views

Can an issue tracking system be distributed?

I was thinking about issue tracking software like Redmine, Trac or even the one that is in Fossil and something hit me: Is there a reason why Redmine and Trac are not possible to be distributed? Or ...
2
votes
2answers
203 views

Open Source Cloud Computing

Recently I realized that the most popular social platforms on the net are in the hand of just a few companies, Google, Twitter, Facebook, to name just a few. Taking into account the world changing ...
2
votes
3answers
252 views

Promoting scalability in small business applications

I am part of a small software company that specializes in small to medium-sized business applications and my experience with distributed architectures/SOA is limited. Please let me know if I'm going ...
2
votes
6answers
169 views

Distributed/Network application development that is user focused but NOT web application development

I was curious, what other architectures exist for business or user focused development that aren't written using web applications. Are these architectures used today? If you are or were in the ...
2
votes
1answer
76 views

Message Passing: How to detect and/or handle “dead ends”

I'm playing with a mental model for distributed actor system that communicates using messages. In this, it is possible for an actor to create another actor. I've encountered one specific situation ...
2
votes
1answer
501 views

Client–server models and Client-centric models

For distributed applications, emphasis mine: Where classic software systems of the past century were mostly based on Client–server models and Client-centric application development, both ...
2
votes
1answer
121 views

Does map-reduce transmit the data and executable instructions?

When map-reduce divides a task and sends the data to each worker process, does it also transmit the instructions for how to operate on the data? For example, let's say Google has some huge array of ...
2
votes
1answer
59 views

Any reference doc /model/ implementation of enforcing events dependency/ordering in distributed computing?

For example, Process P is listening to events E(A) and E(B), but to process either of the events, P needs the other event available too. Naively, when P receives either of the events, it will check if ...
2
votes
0answers
70 views

Accepting the UUID collision risk based on number of clients

After reading some questions about the probability of UUID collisions it seems like collisions although unlikely, are still possible and a conflict solution is still needed. Therefore I am wondering ...
2
votes
0answers
58 views

Managing setTimeouts and setInterval in a distributed environment

I am building a turnbased game on nodejs using socket.io and redis as the datastore. I am planning on hosting the game on AWS opsworks with the ability to scale by adding more nodes. How should I ...
2
votes
2answers
867 views

Building a distributed system on Amazon Web Services

Would simply using AWS to build an application make this application a distributed system? For example if someone uses RDS for the database server, EC2 for the application itself and S3 for hosting ...
2
votes
0answers
156 views

Open Grid Engine or Akka/Something more fault tolerant?

My use case is that I have a pipeline of independent, stand alone programs, that I want to execute in a certain order on specific pieces of data that are output from previous pipeline stages. The ...
2
votes
3answers
620 views

Scalable distributed file system for blobs like images and other documents [closed]

Cassandra & HBase both do not efficiently support storage of blobs like images. Storing directly on HDFS stresses the Namenode because of huge number of files. Facebook uses Haystack for images ...
2
votes
3answers
784 views

Synchronizing local and remote cache in distributed caching

With a distributed cache, a subset of the cache is kept locally while the rest is held remotely. In a get operation, if the entry is not available locally, the remote cache will be used and and the ...
1
vote
1answer
460 views

Chrome's multiple process per each tabs

I am wondering what is the purpose of Chrome using multiple processes for each tabs? I asked this to C++ chat room and one responded it is a product of laziness. I personally believe this is an ...
1
vote
1answer
467 views

Building a Redundant / Distributed Application

This is more of a "point me in the right direction" question. My team of three and I have built a hosted web app that queues and routes customer chat requests to available customer service agents (It ...
1
vote
3answers
221 views

How to rewrite a TCP MMOG server designed to run in a single machine, in a distributed way? [closed]

I have a MMOG server running on C++, using winsockets. My server won't support more than 200 players. I had the idea of redesigning it so it will use multiple servers instead of one, so, maybe, for ...
1
vote
1answer
109 views

How do you control nodes in a server farm?

I've been reading about hadoop and multi-node setups, and it says in the documentation that you must have a JVM and hadoop software already running on those nodes. My question is, do people install ...
1
vote
1answer
550 views

Research paper on distributed computing - Advice?

I am writing my first research paper on distributed storage systems. We also have a prototype working (partially). The project was a complete implementation based project where we envisage to take ...
1
vote
1answer
127 views

Persistent storage for Apache Mesos

Recently I've discovered such a thing as a Apache Mesos. It all looks amazingly in all that demos and examples. I could easily imagine how one would run for stateless jobs - that fits to the whole ...
1
vote
1answer
125 views

Distributed system command and control

I have an application that consists of a set of Java and C++ of processes running on one or more systems and need to ability to monitor and control the components as if they were one complete system. ...
1
vote
1answer
74 views

How should subsytem in different locations interact and communicate?

Apologies for the long post... Where I work we have a system with many subsystems which are located in different locations. All the subsystems process some data and write the result on A database. In ...
1
vote
2answers
101 views

Exclusive use of a Jini server during long-running call

I'm trying to use Jini, in a "Masters/Workers" arrangement, but the Worker jobs may be long running. In addition, each worker needs to have exclusive access to a singleton resource on that machine. ...
1
vote
0answers
25 views

Synchronizing a model over a distributed unreliable network [closed]

On my server I've a model that consists of several objects and attributes, which I persist on a relational database. All CRUD operations are supported. The very common and usual. I need to support ...
1
vote
1answer
49 views

How does Elastic Search approach the problem of distributed membership and consensus?

I already understand that Elastic Search is supposed to be deployed in a distributed topology, in that you can have multiple nodes for a cluster of ES instances. I like the API, and it looks ...
1
vote
3answers
114 views

what are the things to take in consideration when designing a database that likely will be distributed after some time? [closed]

We are small start-up now, we don't have a DBA. if our project succeed, it will have a lot of data that will likely need to be distributed over several machines. So we want to make that step easier, ...
1
vote
2answers
1k views

Design pattern for client/server sessions? [closed]

Are there any common patterns or general guidance I can learn from for how to design a client/server system where the both the client and server must maintain some kind per-client session state? I've ...
1
vote
1answer
118 views

PGAS Systems in the wild [closed]

Has anyone had any experiences with developing a Partitioned Global Address Space product or system, or an application that used PGAS, or anything PGAS-like? I'm looking for insights, warstories, and ...
0
votes
2answers
531 views

why are transaction monitors on decline? or are they?

http://www.itjobswatch.co.uk/jobs/uk/cics.do http://www.itjobswatch.co.uk/jobs/uk/tuxedo.do Look at the demand for programmers (% of job ads that the keyword appears), first graph under the table. ...
0
votes
3answers
97 views

New nodes joining distributed genetic algorithm

I'm sort of torn on what to do for implementation of my distributed genetic algorithm problem. I would like to be able to have nodes join and part at will and not take down the whole system. But this ...
0
votes
1answer
258 views

Distributing cron-like tasks over multiple servers

Currently I'm using something like a master-cron server, which starts the tasks on the slave-worker servers. But there are so many tasks, that the timing gets lost entirely. Is there a an algorithm, ...
0
votes
1answer
106 views

Observing progress of a distributed system

For a distributed system, there is a requirement of observing the progress of smaller applications on distributed computers (runtime 5 - 20 minutes). There is a web fronted, which right now only ...