Recent content on Alexander Sosna
Intro When starting to brew again, I looked for a one-stop place to learn what is going on in home brewing today around the world. I did not find one. That’s why I hacked together ruby-planet, an aggregator that looks through a list of home brewing related blogs and fetches information about the latest posts. It will only display meta information that is provided in the xml feed, like title,…
Current State I currently use a 50l stainless steel pod as a brewing kettle. It needs to be heated over long periods of time. To reach the desired temperatures faster and waste less energy it is helpful to isolate the sides. Currently, I just strap leftovers from an old sleeping pad around the pod, which is neither perfect nor does it look nice. Better Thermal Coat Material I used a simple…
Upcoming Talks Currently, no talks planed. Previous Talks How we execute PostgreSQL major upgrades at GitLab, with zero downtime Upgrading your high available, high load PostgreSQL databases can be a challenge own its own. When having customers around the globe with tight SLAs, the requirement arises to execute these upgrades with minimal or even without any downtime. This talk walks through how…
Intro Most beer recipes only contain the specific information for the described beer. It is assumed that all brewers master their personal brewery and can adjust the recipe where needed. I described my brewery and process in How I brew Beer and here I will only give you the specifics for the Münchner Dunkel. In the past to make beer more flavor and colorful the whole barley was malted at higher…
Intro Over the years I did brew beer multiple times, first ~2004 with a Bier-Kwik style syrup set. Then 2011-2013 with malt. Now after many years of having my brewery stored away mostly in one 130L IKEA box it was time for me to brew again. I however upgraded my kettle to a 50l stainless steel pod and I also got a malt mill, so I can mill malt just in time, removing the need to buy small…
Intro I was interested in it for quite some time and now got myself a Home and amateur (ham) radio license. This allows me to build radios, antennas and other equipment as well as to use it on the air. The first radio I build was a kit, a QDX - Digital Transceiver. This transceiver allowed me to work multiple bands, 80m, 40m, 30m and 20m. I knew from the documentation a bit about the propagation,…
Intro This year I got 4 Apple AirTags for Christmas and now I have the duty to use them wisely. So I came up with a few ideas. luggage bicycle, my trusty 2009 Radon hart tail bicycle trailer car hunting rifle Luggage Most of them are strait forward. In a car, luggage or the bicycle trailer there are many easy places to place an AirTag. On the bicycle it is a bit harder, but on Thingiverse you can…
Intro I personally really like having a quite low air temperature in the bedroom, but a cosy warm bed. In my teenage years I had a heated water bed which was awesome in this regard. I tried to replicate this feature with “normal” beds before using heated blankets. This didn’t worked perfectly well and the amazon reviews of nearly all popular heat blankets show pictures of burn…
Intro to Memory Management Most software can not predict the exact memory needs during compile time, so memory is dynamically allocated during run time. When a program needs more memory it requests a new chunk of memory from the operating system. The OS can either grant or deny the request. Most modern software does not always care very much about the amount that is actually needed and tries to…
[German / EU law demands this …] /* * Alexander Sosna * Karl-Reulen-Str. 25 * 41334 Nettetal */ Email für Abmahnungen: alexander (plus) abmahnung (at) sosna (punkt) de Datenschutzerklärung Hosting Den technischen Betrieb der Hauptseite übernimmt ein Hostinganbieter, die manitu GmbH, https://www.manitu.de/impressum. Logging Der Websever schreibt Logdateien für die Entstörung im Fehlerfall.…