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Questions tagged [distributed]

Multiple computers working together, using a network to communicate

A distributed system consists of multiple autonomous computers that communicate through a . The computers interact with each other in order to achieve a common goal. A computer program that runs in a distributed system is called a distributed program, and distributed programming is the process of writing such programs.

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PHP Parallel/Distributed Tool & MySQL & How to lock a function across multiple servers

I've been building PHP tools with a MySQL backend. Using multi-curl I can run dozens and sometimes hundreds of each script concurrently on just one old PC (that now run the latest Ubuntu desktop). Each machine and each VM on each machine is…
Gabe Spradlin
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Tree structure to support distributed processing

I wrote a workflow distribution platform that is primarily used for text extraction of different file types. It works by processing a file and then recursing over all embedded items in that file that are text-extractable. Each worker item created is…
user481779
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distributed shared memory or not to be?

I need to share data between C++ client and Java server. The Client talks to the server using SOAP. The issue is - I have a generic interface serving all kinds of requests on the Java backend. I don't want to pollute it with specific kind of request…
Maxim Veksler
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Loads redundancy

I have four nodes which are acting as a redundancy quartet of nodes. My client connects to a node named "currentnode". Is it possible that the four nodes can periodically change their name to "currentnode" to allow the client to connect to each of…
Lethi
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Solr distributed search on different shards + on different machines

I am trying to implement distributed Solr search (need to use Solr 3.4 only) where the index is distributed on multiple machines. By shard here, I mean a shard folder containing the index, that the solr core has been configured to search on. It is…
user1224582
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Performance of WCF vs direct sql access

I'm building some business objects for a new project and I'm wondering whether it would be best to have the data access code as part of the application, or to put it behind a service. I've seen Jeff Atwood praise the idea of using a web service…
Brandon Moore
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How is memcached different from other distributed caches?

How is memcaches different (in terms of design/architecture/performance) from other in-memory distributed caches? Thanks Naresh
Naresh
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Configuration distribution on world scalable systems

i'm wondering what could be the best approach to have a world-wide distribute web-application config-synched. For example, imagine we are using .NET. Suppose also i'm not using web.config for app settings, but an isolated cofngig file (or a NO-SQL…
Alex
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Mongodb Sharding Backup / Restore

We are using mongodb sharding in production server and having 2 sharding and 3 replica set including arbitor on each shard. Records also distributed based on write request. But we have to know how will take a backup, because we are having more then…
Kumaran
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Distributed Database designs

Ive read some theoretical stuff about Distributed databases and was wondering if anyone of you know some good practical references(links or something) regarding sample DDBMS data models, data fragmentation and replication techniques and so on? It…
hari
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Erlang / OTP App's handle_info not getting {nodedown, _, _ } or {nodedown, _} messages

I have an Erlang/OTP app, whose handle_info function is not getting {nodedown, _, _ } or {nodedown, _ } messages when a companion node goes down. However, when the companion node comes back up, I do get {nodeup, _, _} messages. I use…
Anonymous
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Request for suggestions on doing IPC/event capture

I have a simple python server script which forks off multiple instances (say N) of C++ program. The C++ program generates some events that need to be captured. The events are currently being captured in a log file (1 logfile per forked process). In…
harish
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WCF service as remote agent

I am building a distributed system. It will contain one managment console and many remote agents (WCF services). How to provide secure communications between managment console and agents in non domain network?
ASergan
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What elements of the GCC toolchain should be the same while developing a distributed system?

I'm in embedded development in C. I've read that in distributed systems you should use the same programming language for different nodes or be prepared to reconcile different data types in the transmitted data. Are there such warning signs for…
user1008673
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Message passing to multiple threads

I am working on a Distributed System , the current state it's more of a client/server application as i'm missing the key part that makes it a distributed system. I don't know how to implement my client thread classs c_thread to pass a 'message' to…
Chris Seymour
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