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One of the core concepts of Django is that of loose coupling. The Django framework is a well-stocked toolkit filled with great tools which work well together, but it makes no effort to force its most-favored software into your project: you can ignore the existing tools and bring your own, if you so choose. Comparing BeepBeep to Django, one might suggest that the term micro framework is a polite wa
The NoSQL movement has raised a flag about possible inclusion of SQL in the HTML 5 standard. Many of these people are fans of simpler key/value APIs. I'm guilty of getting up on stage with a white-on-black slide that says "No SQL in HTML 5." I've since changed my mind. Have all the SQL in HTML 5 you want. Seriously, go for it. SQL in HTML 5 There are two storage APIs in the HTML 5 spec: SQL Storag
require 'rubygems' ###################################################################### ### ActiveRecord (PostgreSQL) require 'active_record' ActiveRecord::Base.establish_connection(:adapter=>"postgresql", :database=>"jpop", :user=>"maiha") module PG class Song < ActiveRecord::Base # Indexes: "index_songs_singer" btree (singer) end end # p PG::Song.count # => 64482 ##############################
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About me My name is Volker Mische and I'm an open source enthusiast and hacker. You can reach me via email, on Twitter (@vmx) or IRC (as vmx). Find me also on GitHub. Categories CouchDB (20) Couchbase (3) EU (2) Erlang (6) Festival (6) Freifunk (1) GeoCouch (10) IPFS (2) IPLD (1) JavaScript (11) Kino (4) Leben (4) MapQuery (5) Musik (2) Node (2) Noise (6) OpenLayers (3) ProtocolLabs (1) Python (9)
I like the ideas that Erlang promotes, but I find myself in a big problem trying to actually read Erlang. That is, I can read sample code, more or less, but real code? Not so much. I won't even touch on writing the code. One of the problems is the lack of IDE support. I tried both ErlIDE and Erlybird, none of them gave me so much as syntax highlighting. They should, according to this post, but I c
I want to dive deep into the way CouchDB's file format, which is interesting, because it maintain ACID guarantees and the code is small enough to make it possible to read. The file starts with a header, with the following structure: "gmk\0" db_header: writer_version update_seq summary_stream_state, fulldocinfo_by_id_btree_state docinfo_by_seq_btree_state local_docs_btree_state purge_seq purged_doc
Okay! After diving into CouchDB source code and doing an in depth review of the btree:lookup, I am ready for the real challenge, figuring out how CouchDB writes to the btree. This is the really interesting part, from my point of view. The heart of this functionality is the query_modify method. This method allow us to perform a batch of operations on the tree in one go. Following my own ideal that
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