Brent Sordyl's Library tagged architecture →  View Popular

At the highest level, you can think of the Digg databases as a four-master set of clusters. We shall call them A, B, C, and D. Two of the masters (masters A and B) are masters only, and two (masters C and D) are slaves of one of the other masters (A).

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digg architecture mysql rubyonrails

In 2000, Craigslist was run on one PC running Linux and handled 6 million page views a month. Today, it has two co-location facilities and 300 servers

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craigslist architecture rubyonrails

# Tomcat and Jetty as application servers
# Oracle and MySQL as DBs
# No ORM (such as Hibernate); they use straight JDBC
# ActiveMQ for JMS. (It’s partitioned by type of messages. Backed by MySQL.)
# Lucene as a foundation for search
# Spring as glue

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linkedin architecture scalability rubyonrails

# Peel off the applications individually, to detangle the appliance mess (use case analysis).
# Categorize applications as batch, online, heavy transactional, or reporting – where the former two indicate likely cloud apps.

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architecture cloudcomputing rubyonrails

Architecture Rules leverages an xml configuration file and optional programmatic configuration to assert your code's architecture via unit tests or ant tasks.

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architecture testing rubyonrails

* #10 - Not Invented Here Syndrome
* #7 - Incorrect Granularity of Services
* #6 - SOA does not solve complexity automatically
* #5 - Big Design Upfront
* #4 - Incorrectly applied Canonical Data Model

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soa architecture rubyonrails

MySQL instances range from 200 to 300 gigabytes. In addition to Squid, Wikipedia uses Memcached and the Linux Virtual Server load balancer. Wikipedia also uses database sharding to set up master-slave relationships between databases.

www.datacenterknowledge.com/...wikipedias_infrastructure.html - Preview

wikipedia scalability architecture mysql rubyonrails

At JavaOne 2008, LinkedIn employees presented two sessions about the LinkedIn architecture. The slides are available online:

* LinkedIn - A Professional Social Network Built with Java™ Technologies and Agile Practices

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scalability architecture linkedin tweet rubyonrails

Here is the quick notes from the session Scaling MySQL - Up or Out ? moderated by Kaj Arno as part of the todays keynote.

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mysql architecture scaling rubyonrails

A modern PHP architecture, strikingly similar to the EJB 2.0 model, is shown below

www.onjava.com/...php_scalability.html - Preview

php scalability java architecture performance rubyonrails

Many companies have implemented stunningly beautiful SOA infrastructures. And yet these SOA initiatives invariably stall out. They have yet to demonstrate any business value.

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soa architecture rubyonrails

Fallacies of Distributed Computing are a set of common but flawed assumptions made by programmers when first developing distributed applications. The fallacies are summarized as follows.

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architecture distributed rubyonrails

ZUCKERBERG: I can’t talk about the number of servers specifically, but I can say it’s not on the order of hundreds of thousands yet; it’s in the order of tens of thousands.

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facebook architecture php rubyonrails

It is quite simple if you decide to compute the high bidder and bid price at display time, not bid time. Each time the item is displayed, all bids are retrieved and the business rules for determining the high bidder are applied.

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architecture ebay rubyonrails

Twitter’s problem with scaling is not RoR, it’s not Joyent NTT, or … Twitter’s scaling problem is exactly the same thing that makes it valuable: their database of users. And getting a traditional SQL /Relational DB to scale horizontally is pretty

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twitter architecture scalability rubyonrails