Scalability is the ability of a system, network, or process, to handle growing amount of work in a capable manner or its ability to be enlarged to accommodate that growth.

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Realtime data transport architecture [on hold]

my first post here, so be gentle. <3 I have a concept of a game system that includes (preferably) Java server and multi-platform clients (Web, Android, iOS). This is a 1vs1 player-vs-player ...
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37 views

Is having coupled hosting in one platform better than having decoupled hosting?

Recently I have been thinking of converting some ideas into apps with couple of like minded friends. Our app will have an module, where users must include an instant messaging. The requirement for ...
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1answer
149 views

Why are JOINS deprecated for a in-memory database?

Correct me if I'm misunderstanding. Refer to the following sentence: Stack Overflow copied a key part of the Wikipedia database design. This turned out to be a mistake which will need massive ...
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5answers
869 views

Fighting technical debt as the “lowest developer”?

Let's say you work for a company and what you do is develop software for them. You have no idea of the big picture or maybe slight. What you do have are tasks assigned to you via issue tracking ...
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3answers
90 views

Difference between Optimization and Scalability?

If I quote a paragraph from Wikipedia about Optimization: In computer science, program optimization or software optimization is the process of modifying a software system to make some aspect of ...
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22 views

UDP distributing/sharding methods

Currently I'm sending UDP messages to a server which handles and processes the message. To make the processing more scalable, I'd like to have some sort of autoscaling mechanism for the receiving ...
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0answers
123 views

Which are the cons of a purely stream-based architecture against a Lambda architecture? [closed]

Disclaimer: I'm not a real-time architectures expert, I'd like only to throw a couple of personal considerations and evaluate what others would suggest or point out. Let's imagine we'd like to design ...
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1answer
53 views

Even distribution through a chain of resources

I'm working on an algorithm which routes tasks through a chain of distributed resources based on a hash (or random number). For example, say you have 10 gateways into a service which distribute tasks ...
3
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1answer
320 views

OOCSS / BEM / SMACSS architecture

I've been working through this article to organize my front-end code. It references articles on BEM / SMACSS, which in turn reference other articles. I'm really trying to understand what the best ...
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2answers
631 views

How do I make multiple calls to a web service without taxing that service heavily? Scaling question

is there a good pattern for how to send multiple calls to a web service but without taxing it and ensuring the data is sent back? I don't know enough to correctly describe the problem to even start ...
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2answers
937 views

Internal-use websites: Is there a compelling case against SQLite?

Many web frameworks, such as Flask or Django use SQLite as their default database. SQLite is compelling because it's included in python, and administrative overhead is pretty low. However, most high ...
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2answers
86 views

Scalability of using environment variables

I just moved into the Ruby on Rails world and with it I am being introduced to much more liberal use of environment variables than what I have been exposed to in the past. Specifically, it appears ...
2
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1answer
261 views

PHP high traffic default page

I have a php website that will be experiencing high levels of traffic in a few weeks. We scaled the servers to accept the traffic, but want some sort of fallback page in the event that something ...
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2answers
260 views

Handling multiple clients using single application

We are developing an ERP web application using Vaadin framework where each of the potential client companies will have their own data and file storage. Current implementation only allows having one ...
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1answer
282 views

Is there any “Set” database? [closed]

Is there any "set" database? For example Neo4j is a "graph" database. What I'm looking for is database which can be used to organize "items" into "sets" and then be able to query them with set ...
3
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3answers
501 views

Is the database the bottleneck or not? High Scalability talk

I found an interesting article on high scalability web site where it talks about EBay scalability and especially a specific passage struck me: "(Ebay strategies)...Move work out of the database ...
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1answer
382 views

How much does the data model affect scalability and performance in so called “NoSQL” database?

You can't ever have a talk about so called "NoSQL" database without bringing the CAP theorem (Consistency, Availability, Partition : pick two). If you have to pick say, between MongoDB (Partition, ...
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6answers
309 views

When to start thinking about scalability?

I'm having a funny but also terrible problem. I'm about to launch a new (iPhone) app. It's a turn-based multiplayer game running on my own custom backend. But I'm afraid to launch. For some reason, I ...
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0answers
82 views

Is OpenStack suitable as a fault tolerant DB host?

I am trying to design a fault tolerant DB cluster (schema does not matter) that would not require much maintenance. After looking at almost everything from MySQL to MongoDB to HBase I still find that ...
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1answer
94 views

How to implement a distributed proxy with quotas?

I'm in the process of developing a scalable proxy (Linux/C/C++, Nginx modules or custom HTTP server) handling incoming HTTP requests, and re-routing them to others locations based on parameters ...
4
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1answer
779 views

Is Node.js correct choice for JSON parsing and IO driven

My program should perform following task: It listen on http port after getting request it does following things. Connect to gearman Parse gearman payload to JSON (Upto 100 bytes) Connect to Redis ...
4
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1answer
1k views

Designing an scalable message queue architecture

I have recently started learning the nuances of scalable and enterprise computer architecture, and one of the central components is a messaging queue. In order to learn the most I can from any ...
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2answers
496 views

Is this solution RESTful and secure?

Our product registers new players on our service, and we've chosen to host it on Azure (we're using .NET) and we wanted it to be stateless (for scalability) and relatively secure. Since this is the ...
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1answer
2k views

How do you write scalable Java? [duplicate]

I like to think I write good maintainable Java code, using best practices, design patterns and try and get good test coverage with unit tests. Recently whilst looking for a job, I came across a ...
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1answer
347 views

Thinking pragmatically about scalability

I was recently asked as an exercise to design a scalable graph. My first intuition was how to seperate the graph and distribute it (sharding,consistent hashing..etc) Turns out my thinking was on ...
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4answers
6k views

why are noSQL databases more scalable than SQL? [duplicate]

Recently I read a lot about noSQL DBMSs. I understand CAP theorem, ACID rules, BASE rules and the basic theory. But didn't find any resources on why is noSQL scalable more easily than RDBMS (e.g. in ...
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4answers
360 views

How concerned about load balancing do I need to be?

I'm currently working on a project which will have client applications (desktop & android & web) communicate with varies processes running on a server(s). My question is how much should I be ...
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2answers
426 views

Why OTServs have an item cloning problem if the server crashes? [closed]

OTServs are open source MMORPGs with a huge community. Mostly all of them have a serious problem: if the server crashes, people can clone items. This is a dirty trick that can be executed because the ...
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1answer
211 views

What are techniques used to make scalable, fast databases? [duplicate]

I'm studying the differences between NoSQL and SQL. If I understood correctly, there are two main techniques to optimize a database: Indexing rows. Say you wanted to make a query such as WHERE x = 1 ...
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1answer
1k views

Is map-reduce the basic factor that makes NoSQL more scalable than SQL?

I'm studying the differences between NoSQL and SQL, and what makes the first more scalable. I think I got the point, so I'll try to explain: Suppose an app has a list of billions of users, each with ...
19
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4answers
984 views

Is BDD scalable for medium to large projects?

In every Website you read about BDD (Behaviour Driven Development) you find a very simple nice example showing you how obvious and easy is it to define your requirements. But trying to implement this ...
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1answer
697 views

How can I scale spring application context?

I'm currently working on a project that need to be dynamically scaled on demand according to the need. My question is about scaling spring context. My web application has a classical multi module ...
2
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2answers
2k views

How to design a scalable notification system? [closed]

I need to write a notification system manager. Here is my requirements: I need to be able to send a Notification on different platforms, which may be totally different (for exemple, I need to be ...
2
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0answers
136 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 ...
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3answers
658 views

Splitting big request in multiple small ajax requests

I am unsure regarding the scalability of the following model. I have no experience at all with large systems, big number of requests and so on but I'm trying to build some features considering ...
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2answers
208 views

How can I distribute a unique database already in production?

Let's assume a successful web Spring application running on a MySQL or PostgreSQL database. The traffic is becoming so high and the amount of data is becoming so big that a distributed database ...
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3answers
8k views

Why would more CPU cores on virtual machine slow compile times?

[edit#2] If anyone from VMWare can hit me up with a copy of VMWare Fusion, I'd be more than happy to do the same as a VirtualBox vs VMWare comparison. Somehow I suspect the VMWare hypervisor will be ...
14
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3answers
5k views

How to design highly scalable web services in Java?

I am creating some Web Services that would have 2000 concurrent users. The services are offered for free and are hence expected to get a large user base. In the future it may be required to scale up ...
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2answers
333 views

Centrally managing 100+ websites without bankrupting a small company [closed]

I'm mainly interested in opinions on the trade-offs between having a single central server all the websites connect to as opposed to each website mirroring a subset of the master database with all the ...
8
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4answers
683 views

scalablity of Scala over Java

I read an article that says Scala handles concurrency better than Java. http://www.theserverside.com/feature/Solving-the-Scalability-Paradox-with-Scala-Clojure-and-Groovy ...the scalability ...
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2answers
96 views

How to handle file access transactions properly?

I'm looking for good practices or any advice regarding file access transaction mechanisms. We will have multiple instances of an application spread over a redundant network (cloud) watching a ...
3
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3answers
833 views

A Huge Database: Picking the right schema and data model

We want to store some genomic variant data but there are some problems, more important ones like problem of the data's immense size and variability. Variant data can be huge. For example, a single ...
3
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5answers
1k views

Structuring database for multi-object “activity” and “following” functionalities

I am working on a web application which operate with different types of objects such as user, profiles, pages etc. All objects have unique object_id. When objects interact it may produce "activity", ...
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2answers
219 views

Proper way to measure the scalability of web Application

Let's say that I have a web Application where i'm going to have 300 users and each one have to see data on real time, imagine that each client make an ajax call to the server to see in real time ...
3
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4answers
737 views

Scaling Scrum within a group of 100s of programmers

Most Scrum teams lean toward 7-15 people **, though it's not clear how to scale Scrum among 100s of people, or how the effectiveness of a given team might be compared to another team within the group; ...
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4answers
1k views

What are some good tips for a developer trying to design a scalable MySQL database?

As the question states, I am a developer, not a DBA. I have experience with designing good ER schemas and am fairly knowledgeable about normalization and good schema design. I have also worked with ...
4
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4answers
2k views

JSF for an internet facing, high traffic web application

I, perhaps, made a wrong choice of going with a Component-based Framework like JSF for an internet facing, high traffic web application. Development with JSF has although been easier but what I fear ...
7
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5answers
496 views

Most common website scalability pitfalls

We are designing a website/web application where we hope to to achieve high user counts and, in general, lots of use. More specifically, we intend to be using PHP as the programming/scripting language ...
2
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2answers
342 views

Dealing with large amounts of web service requests and storing that data

I have a desktop application that sends a POST request to my website every 5 minutes. This post request can contain a variable amount of data about the PC sending the request, but typically it ...
4
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1answer
770 views

How is Scala scalable? [duplicate]

Possible Duplicate: Why is Scala more scalable than other languages? The Wikipedia page on Scala says: The name Scala is a portmanteau of "scalable" and "language", signifying that it ...