https://ronaldbradford.com/tags/mongodb/ Recent content in Mongodb on Enterprise Data Architect | Principal Data Strategist | MySQL Subject Matter Expert | Author | Speaker Hugo -- gohugo.io en-us Fri, 27 Sep 2013 21:20:42 +0000 https://ronaldbradford.com/blog/a-friday-mongodb-funny-2013-09-27/ Fri, 27 Sep 2013 21:20:42 +0000 https://ronaldbradford.com/blog/a-friday-mongodb-funny-2013-09-27/ I had to laugh (just a bit) at this on the exhibitor floor at Oracle Open World 2013. There was a large MongoDB presence at the Slot 301 . There are a few reasons. https://ronaldbradford.com/blog/basic-scalability-principles-to-avert-downtime-2011-04-23/ Sat, 23 Apr 2011 18:39:56 +0000 https://ronaldbradford.com/blog/basic-scalability-principles-to-avert-downtime-2011-04-23/ In the press in the last two days has been the reported outage of Amazon Web Services Elastic Compute Cloud (EC2) in just one North Virginia data center. This has affected many large website includes FourSquare , Hootsuite , Reddit and Quora . https://ronaldbradford.com/blog/part-2-simple-lessons-in-improving-scalability-2011-02-24/ Thu, 24 Feb 2011 04:23:12 +0000 https://ronaldbradford.com/blog/part-2-simple-lessons-in-improving-scalability-2011-02-24/ Given the popular response from my first lesson in improving scalability where I detailed simple ways to eliminate unnecessary SQL, let me share another common bottleneck with MySQL scalability that can be instantly overcome. https://ronaldbradford.com/blog/mongodb-experience-server-logging-2010-06-11/ Fri, 11 Jun 2010 18:31:52 +0000 https://ronaldbradford.com/blog/mongodb-experience-server-logging-2010-06-11/ By default the mongod process sends all output to stdout. You can also specify the daemon to log to file which is necessary for any production implementation. For example: $ mongod --logpath=`pwd`/mongo. https://ronaldbradford.com/blog/mongodb-experience-keyvalue-store-2010-06-11/ Fri, 11 Jun 2010 17:14:37 +0000 https://ronaldbradford.com/blog/mongodb-experience-keyvalue-store-2010-06-11/ MongoDB is categorized as a schema-less, schema-free or a document orientated data store. Another category of NoSQL product is the key/value store. It had not dawned on me until a discussion with some of the 10gen employees that MongoDB is also a key/value store, this is just a subset of features. https://ronaldbradford.com/blog/mongodb-experience-stats-example-app-2010-06-10/ Thu, 10 Jun 2010 17:30:04 +0000 https://ronaldbradford.com/blog/mongodb-experience-stats-example-app-2010-06-10/ The best way to learn any new product is to a) read the manual, and b) start using the product. I created a simple sample application so I could understand the various functions including adding data, searching as well as management functions etc. https://ronaldbradford.com/blog/mongodb-experience-replication-101-2010-06-10/ Thu, 10 Jun 2010 15:06:50 +0000 https://ronaldbradford.com/blog/mongodb-experience-replication-101-2010-06-10/ After successfully installing and testing mongoDB it’s very easy to create a replication environment. $ mkdir -p data/{master,slave} $ mongod --dbpath=`pwd`/data/master --master --port 28011 > master.log 2>&1 & # Always check your log file $ cat master. https://ronaldbradford.com/blog/mongodb-experience-gotcha-with-collection-names-2010-06-09/ Wed, 09 Jun 2010 16:36:49 +0000 https://ronaldbradford.com/blog/mongodb-experience-gotcha-with-collection-names-2010-06-09/ In my earlier tests I bulk loaded data with the following command. mongoimport -d olympics -c olympic_event -type tsv --headerline -f name,id,sport,demonstration_competitions,olympic_games_contested,competitions,contested_as_demonstration_event --drop olympic_event.tsv connected to: 127.0.0.1 dropping: olympics.olympic_event imported 775 objects As you can see I imported 775 objects, however when I went to review them via the mongo interactive shell I found no data. https://ronaldbradford.com/blog/mongodb-experience-whats-running-in-the-db-2010-06-09/ Wed, 09 Jun 2010 16:07:24 +0000 https://ronaldbradford.com/blog/mongodb-experience-whats-running-in-the-db-2010-06-09/ You can very easily find out the running threads in the database (e.g. like a MySQL SHOW PROCESSLIST) with db.currentOp . > db.currentOp(); { "inprog" : [ ] } No much happening, however under some load you can see https://ronaldbradford.com/blog/mongodb-experience-bulk-loading-data-2010-06-09/ Wed, 09 Jun 2010 15:49:21 +0000 https://ronaldbradford.com/blog/mongodb-experience-bulk-loading-data-2010-06-09/ mongoDB has a mongoimport command. The docs only shows the usage but not any examples. here are my first examples. data1.csv 1 2 3 4 5 6 7 8 9 0 You need to specify your database (-d) and collection (-c) for importing. https://ronaldbradford.com/blog/mongodb-experience-online-resources-2010-06-09/ Wed, 09 Jun 2010 14:55:09 +0000 https://ronaldbradford.com/blog/mongodb-experience-online-resources-2010-06-09/ Following the initial Quickstart docs you will find a lot of online documentation. The following are good places to start. Tutorial The Interactive Shell Manual Admin Zone Starting and Stopping Monitoring and Diagnostics Backups There is also a Getting Started however I found this a duplication of the Quickstart. https://ronaldbradford.com/blog/mongodb-experience-getting-started-2010-06-09/ Wed, 09 Jun 2010 13:47:17 +0000 https://ronaldbradford.com/blog/mongodb-experience-getting-started-2010-06-09/ Getting started with MongoDB is relatively straight forward, following the instructions from the Quickstart guide has you operational in a few minutes. I like projects that provide a latest version link for software. https://ronaldbradford.com/blog/mongodb-experience-history-2010-06-09/ Wed, 09 Jun 2010 13:21:04 +0000 https://ronaldbradford.com/blog/mongodb-experience-history-2010-06-09/ My first exposure to MongoDB was in July 2008 when I was a panelist on “A Panel on Cloud Computing” at the Entrepreneurs Round Table in New York. The panel included a representative from 10gen the company behind the open source database product and at the time Mongo was described as a full stack solution with the database being only one future component. https://ronaldbradford.com/blog/nosql-options-2009-10-06/ Tue, 06 Oct 2009 15:53:40 +0000 https://ronaldbradford.com/blog/nosql-options-2009-10-06/ The NoSQL event in New York had a number of presentations on non relational technologies including of Hadoop , MongoDB and CouchDB . Coming historically from a relational background of 20 years with Ingres , Oracle and MySQL I have been moving my focus towards non relational data store.