A: no, it lives side-by-side with the existing Aurora Serverless, which will still be available to you as "v1".
I've gotten a few questions about Aurora Serverless v2 preview, so here's what I've learnt so far. Please feel free to chime in if I've missed anything important or got any of the facts wrong.
Alright, here goes the 🧵...
A: no, it lives side-by-side with the existing Aurora Serverless, which will still be available to you as "v1".
A: no, v2 scales up in milliseconds, during preview the max ACU is only 32 though
A: yes, unfortunately...
Q: so if you want to avoid cold starts, what's the minimum ACU you have to run?
A: minimum ACU with v2 is 0.5
A: no, it scales up in increments of 0.5 ACUs, so it's a much tighter fit for your workload, so you'll waste less money on over-provisioned ACUs
A: yes, v2 supports all the Aurora features, including those that v1 is missing, such as global database, IAM auth and Lambda triggers
A: yes, but v1 requires a lot of over-provisioning because it doubles ACU each time and takes 15 mins to scale down. v2 scales in 0.5 ACU increments and scales down in < 1 min. AND you get all the Aurora features!
A: yes you can! cool, right!?
A: yes, you probably should, until data API is enabled on v2, otherwise, more connections = more ACUs, it can run you into trouble
@jeremy_daly has written a nice summary post on this too, with a nice experiment on the scaling behaviour of v2, so check it out if you haven't already https://t.co/DIGylN0HFX
More from Software
Developer productivity, y'all. It is a three TRILLION dollar opportunity, per the stripe report.
Eng managers and directors, we have got to stop asking for "more headcount" and start treating this like the systems problem that it is. https://t.co/XJ0CkFdgiO
If you are getting barely more than 50% productivity out of your very expensive engineers, I can pretty much guarantee you cannot hire your way out of this resourcing issue. 😐
(the stripe report is here:
Say you've got a strategic initiative that 3 engineers to build and support it. Well, they're going to be swimming in the same muddy pipeline as everyone else at ~50%, so you're actually gotta source, hire and train 6, er make that 7 (gonna need another manager too now)...
...which actually understates the problem, because each person you add also adds friction and overhead to the system. Communication, coordination all get harder and processes get more complex and elaborate, etc.
So we could hire 7 people, or we could patch up our sociotechnical system to lose say only 25% productivity to tech debt, instead of 42%? 🤔
By my calculations, that would reclaim 3 engineers worth of capacity given a team of just 17-18 people.
Eng managers and directors, we have got to stop asking for "more headcount" and start treating this like the systems problem that it is. https://t.co/XJ0CkFdgiO
When people often have to spend weeks just to get a local development environment up, there is a lot to improve. \U0001f641
— Daniel Schildt (@autiomaa) December 20, 2020
If you are getting barely more than 50% productivity out of your very expensive engineers, I can pretty much guarantee you cannot hire your way out of this resourcing issue. 😐
(the stripe report is here:
Say you've got a strategic initiative that 3 engineers to build and support it. Well, they're going to be swimming in the same muddy pipeline as everyone else at ~50%, so you're actually gotta source, hire and train 6, er make that 7 (gonna need another manager too now)...
...which actually understates the problem, because each person you add also adds friction and overhead to the system. Communication, coordination all get harder and processes get more complex and elaborate, etc.
So we could hire 7 people, or we could patch up our sociotechnical system to lose say only 25% productivity to tech debt, instead of 42%? 🤔
By my calculations, that would reclaim 3 engineers worth of capacity given a team of just 17-18 people.
@JuliaLMarcus @Iplaywithgerms This paper gives documentation on software (with causal reasoning, assumptions reviewed in appendix) for a parametric approach to estimating either "total effects" or "controlled direct effects" with competing events and time-varying
@Iplaywithgerms Total effects capture paths by which treatment affects competing event (e.g. protective total effect of lifesaving treatment on dementia may be wholly/partially due to effect on survival). Controlled direct effects do not capture these paths
@Iplaywithgerms More detailed reasoning on the difference and tradeoffs between total and controlled direct effects and causal reasoning in the point treatment context provided here along with description of some estimators and
@Iplaywithgerms If you are familiar with more robust approaches like IPW or even better TMLE for time-varying treatment, these are trivially adapted to go after the controlled direct effect by simply treating competing events like loss to follow-up (censoring). e.g.
@Iplaywithgerms Examples of IPW estimation of the total effect of a time-varying treatment described in Appendix D of this paper:
https://t.co/RNhcgTBMkb
And here
https://t.co/rMWmwFBWwV
Others in reference lists of above papers.
@Iplaywithgerms Total effects capture paths by which treatment affects competing event (e.g. protective total effect of lifesaving treatment on dementia may be wholly/partially due to effect on survival). Controlled direct effects do not capture these paths
@Iplaywithgerms More detailed reasoning on the difference and tradeoffs between total and controlled direct effects and causal reasoning in the point treatment context provided here along with description of some estimators and
@Iplaywithgerms If you are familiar with more robust approaches like IPW or even better TMLE for time-varying treatment, these are trivially adapted to go after the controlled direct effect by simply treating competing events like loss to follow-up (censoring). e.g.
@Iplaywithgerms Examples of IPW estimation of the total effect of a time-varying treatment described in Appendix D of this paper:
https://t.co/RNhcgTBMkb
And here
https://t.co/rMWmwFBWwV
Others in reference lists of above papers.
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Joshua Hawley, Missouri's Junior Senator, is an autocrat in waiting.
His arrogance and ambition prohibit any allegiance to morality or character.
Thus far, his plan to seize the presidency has fallen into place.
An explanation in photographs.
🧵
Joshua grew up in the next town over from mine, in Lexington, Missouri. A a teenager he wrote a column for the local paper, where he perfected his political condescension.
2/
By the time he reached high-school, however, he attended an elite private high-school 60 miles away in Kansas City.
This is a piece of his history he works to erase as he builds up his counterfeit image as a rural farm boy from a small town who grew up farming.
3/
After graduating from Rockhurst High School, he attended Stanford University where he wrote for the Stanford Review--a libertarian publication founded by Peter Thiel..
4/
(Full Link: https://t.co/zixs1HazLk)
Hawley's writing during his early 20s reveals that he wished for the curriculum at Stanford and other "liberal institutions" to change and to incorporate more conservative moral values.
This led him to create the "Freedom Forum."
5/
His arrogance and ambition prohibit any allegiance to morality or character.
Thus far, his plan to seize the presidency has fallen into place.
An explanation in photographs.
🧵
Joshua grew up in the next town over from mine, in Lexington, Missouri. A a teenager he wrote a column for the local paper, where he perfected his political condescension.
2/
By the time he reached high-school, however, he attended an elite private high-school 60 miles away in Kansas City.
This is a piece of his history he works to erase as he builds up his counterfeit image as a rural farm boy from a small town who grew up farming.
3/
After graduating from Rockhurst High School, he attended Stanford University where he wrote for the Stanford Review--a libertarian publication founded by Peter Thiel..
4/
(Full Link: https://t.co/zixs1HazLk)
Hawley's writing during his early 20s reveals that he wished for the curriculum at Stanford and other "liberal institutions" to change and to incorporate more conservative moral values.
This led him to create the "Freedom Forum."
5/
