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| Postgres Weekly | Issue 75 October  1, 2014
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| A simple guide for DB migrations |  | Adding columns to your database can sometimes be a painful experience resulting in downtime while that new addition is made. Seldom if ever does this have to be the case with Postgres. |  | Craig Kerstiens |  | 
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| Allocation Set Internals |  | Want to learn a bit more around the internals of how memory is allocated within Postgres? Here’s a great dive into the internals of the DB itself. |  | PostgreSQL Addict |  | 
 
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| Take our 12-week Immersive Coding School Onsite or Online |  | We are actively accepting applications for two new online cohorts of our 12-week immersive JavaScript coding school beginning October 27th and December 8th. Apply today for Hack Reactor Remote Beta and be on your way to becoming an Engineer. |  | Hack Reactor  Sponsored |  |  | 
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| So You Want Another PostgreSQL Database? (Part 1) |  | There comes a time in many application’s lives where you need to scale beyond a single Postgres instance. Here’s the start of a series that starts to delve into the things you need to know and consider if you’re working to scale that yourself. |  | John Young |  | 
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| Postgres: Time Travelling Debugger |  | Ever interact with a system where results change over time? If so then debugging can be well… difficult. Here’s a form of keeping an audit log in Postgres to help with such. |  | Gary Sieling |  | 
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| Upcoming Postgres 9.4beta3 release |  | After some resolution around on disk format changes to the much exciting JSONB datatype, 9.4 beta 3 is around the corner inching us every closer to the full release. |  | postgresql.org |  | 
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| Toshi - Open Source Bitcoin Node |  | Want you’re own bitcoin node that’s powered by Postgres? Here it is. And a great place to practice your SQL skills on a large dataset. |  | Toshi |  | 
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| Using Postgres Composite Types in Django |  | If you’ve ever had to deal with scheduling applications and calendaring you know what seems on the surface to be simple can create all sorts of pain. Here’s a deep dive into one solution involving composite types in PG. |  | Matthew Schinckel |  | 
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