The Tesla’s big battery in South Australia has already taken a 55 per cent share in the state’s frequency and ancillary services market, and lowered prices in that market by 90 per cent, new data has shown.
And the 100MW battery has achieved over 55 per cent of the FCAS revenues in South Australia. So it’s 2 per cent of the capacity in South Australia achieving 55 per cent of the revenues in South Australia.
Various estimates have put the cost savings to consumers from the FCAS market alone at around $35 million, just in the first four months of its operation.
That’s a pretty good bang for the buck for the estimated $50 million investment by the South Australia government. South Australia is the only state that has experienced a decline in FCAS prices over the past few months.
What follows is my personal, opinionated, idiosyncratic approach to React/Redux development, forged in half a dozen attempts to pursue test-driven development at a good pace.
Some interesting approaches in here. I like the use of more classic terms for some of the Redux concepts. Commands instead of Action Creators. Events instead of actions. Read models instead of reducers or selectors.
I’m almost two years into working remotely full time. It affords me flexibility and focus but it also comes with its challenges. I have a few strategies that help make it work for me and maybe they’ll help you too.
I mostly work from a room with a closable door. At the end of my work day I walk away and close said door. I find this helps me disconnect and keep my home and work contexts separate.
Change up where you work. It’s good to work in different rooms and different locations. I like to go somewhere where there are people around; even if I’m not speaking to them e.g. I’m often that rando working on his laptop in the food court.
I spend a lot of time on video calls. I have this headset by Jabra which has a decent microphone that doesn’t pick up much background noise. It also has a hardware mute button on the cord always within reach. As a bonus, people throw lots of “you look like you work in a call centre” gags at me.
Regular lunches in the city with friends helps top up my face to face human interaction stores.
Your energy levels will vary, do your best to ride it out. Sometimes I am a storm of energy and rip through my work. Other times I struggle to lock in and focus. Stick with it. Hold strong.
Get outside regularly. The dark side of not having a commute is that you can end up barely moving all day. I regularly walk around my neighbourhood to get some steps under my belt and sunshine on my face.
Creating an event sourced, CQRS application is simple enough conceptually but there is a lot of hidden detail when it comes to building them. There are a couple of event sourcing libraries I’ve used that can help.
The first, Event Sourcery, is in Ruby and created by my colleagues at Envato. You can use Postgres as your data store and it gives you what you need to build aggregates and events and projectors and process managers.
The immutability and process supervision baked into Elixir makes it a compelling option for implementing these kind of applications as well. Commanded is written in Elixir and follows a very similar approach to Event Sourcery and works a treat.
I don’t know what the original idea of Twitter was, but it succeeded because of natural selection. In a world where the tech industry was cranking out millions of dumb little social applications, this one happens to limit messages to 140 characters and that happens to create, unintentionally, a subtlety-free indignation machine, which is addictive as heck, so this is the one that survives and thrives and becomes a huge new engine of polarization and anger.
Indexes are models: a B-Tree-Index can be seen as a model to map a key to the position of a record within a sorted array, a Hash-Index as a model to map a key to a position of a record within an unsorted array, and a BitMap-Index as a model to indicate if a data record exists or not. In this exploratory research paper, we start from this premise and posit that all existing index structures can be replaced with other types of models, including deep-learning models, which we term learned indexes.
Our initial results show, that by using neural nets we are able to outperform cache-optimized B-Trees by up to 70% in speed while saving an order-of-magnitude in memory over several real-world data sets.
I used to find it odd that these hypothetical AIs were supposed to be smart enough to solve problems that no human could, yet they were incapable of doing something most every adult has done: taking a step back and asking whether their current course of action is really a good idea. Then I realized that we are already surrounded by machines that demonstrate a complete lack of insight, we just call them corporations.
I’ve been waiting eagerly for this episode to air — it’s my favorite of the season. As I looked through my notes, I was surprised to find that Kor and I first started working on scenes for “eps3.4_runtime-err0r.r00” as far back as January. The attacks against E Corp’s Hardware Security Modules (HSMs) are among the most complex hacks we’ve depicted on the show
Rich Hickey explained the design choices behind Clojure and made many statements about static typing along the way. I share an interesting perspective and some stories from my time as a Haskell programmer. I conclude with a design challenge for the statically typed world.
People often talk about a Person class representing a person. But it doesn’t. It represents information about a person. A Person type, with certain fields of given types, is a concrete choice about what information you want to keep out of all of the possible choices of what information to track about a person. An abstraction would ignore the particulars and let you store any information about a person. And while you’re at it, it might as well let you store information about anything. There’s something deeper there, which is about having a higher-order notion of data.
Having a formal system means we can better support the growth of our engineers. We’re able to have more honest, open conversations about progress, promotions, and opportunity. While the framework is still relatively new, it is showing early promise at incentivising the kinds of behaviours we want to see in the team, and recognising the different kinds of value that people add.
We already have ideas on how to improve the framework further, and plan to continue iterating on it over time. We are releasing it publicly now, in the hope that it can help other companies that are thinking about how to grow and support their employees.
Medium’s growth framework looks well thought out and nicely structured.