Tokyo Cabinet is a library of routines for managing a database. The database is a simple data file containing records, each is a pair of a key and a value. Every key and value is serial bytes with variable length. Both binary data and character string can be used as a key and a value. There is neither concept of data tables nor data types. Records are organized in hash table, B+ tree, or fixed-length array.

(tags: ruby software programming scalability database erlang storage tech qdbm fast dbm tokyocabinet gdbm)

(tags: library ruby java programming scalability database erlang hash storage persistence fast dbm tokyocabinet key-value associative)

GigaSpaces XAP, the scale-out application server, bridges the gap between on-demand hardware scalability and on-demand application scalability.

(tags: framework java ec2 cloud scalability j2ee cluster scaling aws infrastructure hosting gigaspaces)

Chef is a systems integration framework, built to bring the benefits of configuration management to your entire infrastructure. With Chef, you can:\n\n * Manage your servers by writing code, not by running commands. (via Cookbooks)\n * Integrate tightly with your applications, databases, LDAP directories, and more. (via Libraries)\n * Easily configure applications that require knowledge about your entire infrastructure ("What systems are running my application?" "What is the current master database server?")

(tags: ruby tools server scalability sysadmin tool systems automation puppet)

In a dynamic computing environment such as EC2 it is useful to have Erlang nodes automatically discover each other.

(tags: library network ec2 scalability s3 erlang aws tool automation mnesia node discovery)

(tags: java opensource programming jvm language languages functional scripting haskell jaskell)

ZXing (pronounced "zebra crossing") is an open-source, multi-format 1D/2D barcode image processing library implemented in Java. Our focus is on using the built-in camera on mobile phones to photograph and decode barcodes on the device, without communicating with a server.

(tags: library java opensource software tools programming qrcode scanner tagging barcode qr reader zxing upc)

(tags: graph network algorithm social theory random generation)

(tags: ruby java programming jruby development jvm)

(tags: macosx osx writing tool mac latex tex typesetting)