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My take on the cornerstones of good project estimation and planning. Firstly, a huge thank you to Mike Cohn for his book on Agile estimation and Planning, which I wholeheartedly recommend if you want to know more about these techniques. And also, to Steve McConnell for going into the real details of software estimation in […]


11 cheers for binary (And 3 for hexadecimal)!

by Carmel Eve

So, I finally reached a point in my software development education where I could no longer avoid it. I needed to actually learn what binary was… Now a lot of you are probably sat here wondering how on earth I managed to get to this point without knowing, and to be honest, I have no […]


So, this week we are looking at the Buffer and Window Rx operators. (If you have no idea what I’m on about, I suggest you start at the beginning!) There are a few different implementations of these operators, and we are going to focus on the time-based versions. In order to do this, we need […]


After a brief foray into Azure AD, we’re back onto Rx! (If you missed part 1 and 2 then might be worth having a quick read – going to gloss over some of the stuff common to both) OnNext(The GroupBy operator) This week we’re looking at the GroupBy operator. This one’s a bit more involved, […]


In September I joined endjin a Technical Fellow (an entirely new branch in endjin’s career pathway to accommodate me – more on that later). I’ve has been involved with endjin since 2011, as an Associate, helping to deliver some of our most technically challenging projects (and if you go even further back, I attended Cambridge University with endjin co-founder […]


There’s been a little bit of a gap since my last Rx blog, I’ve been pretty busy with keeping up with Advent of Code in any spare time (and I’m sure there will be a blog along those lines at some point in the near future). But, for now, it’s time for a deep dive […]


In case you missed it… Here’s a link to my last blog on understanding Rx (luckily this blog has an internal buffer so if you’re just tuning in now, you’ve not missed your chance)! OnNext(Understanding of the Rx operators) Now one of the most exciting things about Rx is that it has its own implementation […]


Overflowing with dataflow part 2: TPL Dataflow

by Carmel Eve

Edit: In case you missed it! Here’s a link to part 1, a general overview of dataflow as a processing technique! The specific implementation of dataflow that I want to talk about is the TPL dataflow library. The task parallel library is a .NET library which aims to make parallel processing and concurrency simpler to […]


I’m very excited that Ian Griffiths has joined endjin as a “Technical Fellow”. This is a new career pathway branch we created especially for Ian, as he didn’t really fit into any of our existing roles; his skills and expertise exemplify a pathway that many software engineers desire, but few have the opportunity to achieve […]


Disclaimer: This is not an in-depth overview of encryption and data management, more a slice of the concepts I’ve come across as a relative newcomer to this world (i.e. I’m new, please forgive my relative ignorance). A brief introduction to hashing In order to talk about cryptography, we first need to understand hashing. In a […]