Subj : Alexa bleeds cash 📉, Elon's AI cluster ⚡, finding technical co-founders 👨‍💻 To : tldr@synchro.net From : TLDR Date : Tue Jul 23 2024 10:35:53 --oLI9Mk0l Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Amazon's bet that people would spend meaningful amounts of money to buy g= oods on its platform by talking to its voice assistant hasn't paid off= =C2=A0=20 Sign Up [1] |Advertise [2]|View Online [3]=20 =09=09TLDR = =09=09TOGETHER WITH [WorkOS] [4] TLDR 2024-07-23 LEARN AUT= HORIZATION WITH WORKOS: TECHNICAL RESOURCES FOR DEVELOPERS (SPONSOR) [4] = Authorization (AuthZ) often takes the backseat to authentication (= AuthN), but it is just as important when scaling your B2B SaaS apps for e= nterprises. Check out these detailed DEVELOPER GUIDES from WorkOS to g= et up to speed quickly: =E2=86=92 The Developer's Guide to RBAC: Par= t I [4]: Fundamentals of RBAC and how it differs from fine-grained author= ization (FGA) =E2=86=92 The Developer's Guide to RBAC: Part II [5]: Wh= y enterprises prefer identity provider-based authorization systems over b= asic AuthZ =E2=86=92 Unlocking the power of SCIM [6]: SCIM is critical= for user lifecycle management and affects how your customers manage role= s and permissions =E2=86=92 Prefer to learn by doing? Start building= with WorkOS [7] =F0=9F=93=B1=20 BIG TECH & STARTUPS ELON MUS= K'S XAI ACTIVATES =E2=80=9CMOST POWERFUL AI TRAINING CLUSTER IN THE WORLD= =E2=80=9D WITH 100K NVIDIA H100 GPUS (2 MINUTE READ) [8]=20 xAI has act= ivated a supercomputer cluster comprised of 100,000 Nvidia H100 GPUs in M= emphis, Tennessee. It is effectively the most powerful AI training cluste= r in the market today. The supercomputer is expected to be used to train = Grok, the company's large language model. xAI is estimated to have spent = about $3 billion to $4 billion on the project. xAI also recently announce= d that it is hiring to increase its human talent advantage.=20 ALEXA = IS IN MILLIONS OF HOUSEHOLDS=E2=80=94AND AMAZON IS LOSING BILLIONS (13 MI= NUTE READ) [9]=20 While hundreds of millions of customers own Alexa-ena= bled devices, Amazon's bet that people would spend meaningful amounts of = money to buy goods on its platform by talking to the voice assistant hasn= 't paid off. Customers mostly use Alexa to set alarms and check the wea= ther. Amazon has lost tens of billions of dollars on its devices business= .. The company will launch a paid tier for Alexa as soon as this month as = part of the plan to reverse these losses.=20 =F0=9F=9A=80=20 SCIENCE = & FUTURISTIC TECHNOLOGY CHINA UNVEILS WORLD'S 1ST MELTDOWN-PROOF NUCL= EAR REACTOR WITH 105 MW CAPACITY (4 MINUTE READ) [10]=20 Researchers = at Tsinghua University in China have successfully demonstrated a meltdown= -proof nuclear fission reactor. The twin reactor design can generate 105 = MW of power each. It can cool itself down without an external power sourc= e, reaching stable temperatures around 35 hours after shutdown. Construct= ion of the facility started in 2016, with commercial operations beginning= only in December last year. One drawback of the technology is that it ca= n't be retrofitted onto existing nuclear reactors.=20 WE'RE BUILDING = NUCLEAR SPACESHIPS AGAIN=E2=80=94THIS TIME FOR REAL (23 MINUTE READ) [11]= =20 Powering spaceships using compact reactors could cut down Mars tr= ansit times by more than half. The technology also has military applicati= ons, with DARPA requesting a nuclear rocket demonstrator in June 2020. Th= e Demonstration Rocket for Agile Cislunar Operations (DRACO) project aims= to create space-based assets that can move quickly within space to deter= strategic attacks by adversaries. This article discusses the DRACO proje= ct and the technologies that make it possible.=20 =F0=9F=92=BB=20 P= ROGRAMMING, DESIGN & DATA SCIENCE ADVERTISE IN TLDR, GET IN FRONT OF = 4+ MILLION TECH PROFESSIONALS (SPONSOR) [12]=20 If you're looking to = get in front of software developers, product managers, executives and oth= er tech professionals, consider advertising in TLDR. We have 10 newslette= rs to choose from and a subscriber base of 4+ million tech professionals = to effectively reach your target audience. Learn more [12] about running = your first campaign with us.=20 MAESTRO (GITHUB REPO) [13]=20 Mae= stro is a general-purpose workflow orchestrator that can schedule million= s of jobs every day and operate with a strict SLO even when there are spi= kes in traffic. It is highly scalable and extensible and provides a fully= managed workflow-as-a-service. Maestro serves thousands of data platform= users at Netflix for various use cases.=20 JIFF (GITHUB REPO) [14]=20 = Jiff is a datetime library for Rust. It provides high level datetime = primitives with reasonable performance that are difficult to misuse. Jiff= supports automatic and seamless integration with the Time Zone Database,= DST aware arithmetic and rounding, formatting and parsing zone aware dat= etimes losslessly, opt-in Serde support, and more. Its minimum supported = rustc version is 1.70.0.=20 =F0=9F=8E=81=20 MISCELLANEOUS ETHER= EUM ETFS APPROVED BY SEC, BRINGING POPULAR FUNDS TO SECOND-LARGEST CRYPTO= CURRENCY (3 MINUTE READ) [15]=20 US regulators have approved spot excha= nge-traded funds that hold Ethereum. Bitcoin ETFs, which were approved in= January, have attracted tens of billions of dollars of investment. Some = analysts predict that inflows into ETH ETFs won't be nearly as high as fo= r BTC ETFs. Ethereum doesn't have the first-mover advantage that Bitcoin = had and it lacks a strong narrative.=20 WHY TECHNICAL COFOUNDERS REJE= CT YOU (7 MINUTE READ) [16]=20 There are many reasons technical cofound= ers will reject a startup. This article discusses some of these factors, = such as unrealistic expectations from founders, putting too much value on= an idea, or a lack of understanding of the market. Building a compelling= case for a technical cofounder to want to join a founder involves provid= ing proof that the idea or product will work and that the founder is able= to bring the idea to life. Founders need to prove that they will be su= ccessful and that the train is departing.=20 =E2=9A=A1=20 QUICK LINKS= TESLA OPTIMUS PRODUCTION IS ESTIMATED TO START IN 2025 (1 MINUTE R= EAD) [17]=20 Elon Musk says that Tesla will have genuinely useful robot= s in low production for internal use next year.=20 NO MORE BLUE FRIDA= YS (3 MINUTE READ) [18]=20 Software updates in the future will be effec= tively run in a sandbox that rejects unsafe code.=20 GOOGLE CHROME IS= NO LONGER =E2=80=98DEPRECATING THIRD-PARTY COOKIES' (2 MINUTE READ) [19]= =20 Google is introducing additional privacy controls into Chrome such = as IP Protection in Incognito mode.=20 A GENTLE INTRODUCTION TO SAML = (28 MINUTE READ) [20]=20 SAML (Security Assertion Markup Language) defi= nes a flexible set of rules for exchanging security-related messages in X= ML.=20 HOW FAST CAN A HUMAN POSSIBLY RUN 100 METERS? (5 MINUTE READ) [2= 1]=20 With the ideal anatomy and conditions: 6.97 seconds.=20 TINKE= RBIRD (GITHUB REPO) [22]=20 TinkerBird is a Chrome-native vector databa= se with a query engine written in TypeScript designed for efficient stora= ge and retrieval of embeddings.=20 Love TLDR? Tell your friends and ge= t rewards! Share your referral link below with friends to get free TL= DR swag!=20 https://refer.tldr.tech/1fd848fa/ [23]=20 =09=09 Track y= our referrals here. [24]=20 Want to advertise in TLDR? =F0=9F=93=B0 = If your company is interested in reaching an audience of tech executi= ves, decision-makers and engineers, you may want to ADVERTISE WITH US [25= ].=20 If you have any comments or feedback, just respond to this email!= =20 Thanks for reading,=20 Dan Ni & Stephen Flanders=20 If you don't = want to receive future editions of TLDR, please unsubscribe from TLDR [26= ] or manage all of your TLDR newsletter subscriptions [27].=20 =20 = Links: ------ [1] https://tldr.tech/signup?utm_source=3Dtldr [2] http= s://advertise.tldr.tech/?utm_source=3Dtldr&utm_medium=3Dnewsletter&utm_camp= aign=3Dadvertisetopnav [3] https://a.tldrnewsletter.com/web-version?ep=3D= 1&lc=3Db5bb39ac-a04f-11ee-8692-6388dbdd6fd1&p=3D12d724da-48c9-11ef-b10c-e1e= d1ae1aa50&pt=3Dcampaign&t=3D1721730953&s=3D4f09b29f4afae2336326d3b486ab54ac= 3769f8335b9988fa6aee1b43ebd706df [4] https://workos.com/blog/developers-g= uide-to-rbac-part-i/?utm_source=3Dtldr&utm_medium=3Dnewsletter&utm_campaign= =3Dq22024 [5] https://workos.com/blog/the-developers-guide-to-rbac-and-id= ps-part-ii/?utm_source=3Dtldr&utm_medium=3Dnewsletter&utm_campaign=3Dq22024= [6] https://workos.com/blog/unlocking-the-power-of-scim/?utm_source=3Dtl= dr&utm_medium=3Dnewsletter&utm_campaign=3Dq22024 [7] https://workos.com?u= tm_medium=3Dnewsletter&utm_source=3Dtldr-tech&utm_campaign=3D20240723 [8]= https://www.teslarati.com/elon-musk-xai-supercomputer-cluster-100k-nvidia-= h100-gpus/?utm_source=3Dtldrnewsletter [9] https://links.tldrnewsletter.c= om/fa5MYr [10] https://links.tldrnewsletter.com/54gg0Y [11] https://lin= ks.tldrnewsletter.com/Kcp6oW [12] https://advertise.tldr.tech/?utm_source= =3Dtldr&utm_medium=3Dnewsletter&utm_campaign=3Dsecondary07232024 [13] htt= ps://github.com/Netflix/maestro?utm_source=3Dtldrnewsletter [14] https://= github.com/BurntSushi/jiff?utm_source=3Dtldrnewsletter [15] https://www.c= oindesk.com/business/2024/07/22/sec-approves-spot-ethereum-etfs/?utm_source= =3Dtldrnewsletter [16] https://www.softwaredesign.ing/blog/why-technical-= cofounders-reject-you?utm_source=3Dtldrnewsletter [17] https://www.teslar= ati.com/tesla-optimus-production-estimate-2025/?utm_source=3Dtldrnewsletter= [18] https://www.brendangregg.com/blog/2024-07-22/no-more-blue-fridays.h= tml?utm_source=3Dtldrnewsletter [19] https://9to5google.com/2024/07/22/go= ogle-chrome-third-party-cookies-2/?utm_source=3Dtldrnewsletter [20] https= ://ssoready.com/blog/engineering/a-gentle-intro-to-saml/?utm_source=3Dtldrn= ewsletter [21] https://bigthink.com/starts-with-a-bang/fast-human-run-100= -meters/?utm_source=3Dtldrnewsletter [22] https://github.com/wizenheimer/= tinkerbird?utm_source=3Dtldrnewsletter [23] https://refer.tldr.tech/1fd84= 8fa/ [24] https://hub.sparklp.co/sub_32edf8dd66ae/1 [25] https://advert= ise.tldr.tech/?utm_source=3Dtldr&utm_medium=3Dnewsletter&utm_campaign=3Dadv= ertisecta [26] https://a.tldrnewsletter.com/unsubscribe?ep=3D1&l=3Dcfa2d5= 5a-b7be-11e8-a3c9-06b79b628af2&lc=3Db5bb39ac-a04f-11ee-8692-6388dbdd6fd1&p= =3D12d724da-48c9-11ef-b10c-e1ed1ae1aa50&pt=3Dcampaign&pv=3D4&spa=3D17217288= 31&t=3D1721730953&s=3D2df42674ec32442179e47639770ca91c18107a7234f8095d66ccb= 7a27987832a [27] https://tldr.tech/tech/manage?email=3Dtldr%40synchro.net --oLI9Mk0l Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: quoted-printable TLDR
Amazon's bet that people would spend meaningful amounts of money to= buy goods on its platform by talking to its voice assistant hasn't pa= id off 

TLDR

Together With 3D"WorkOS"<= /td>

TLDR 2024-07-23

Learn Authorization with Wo= rkOS: Technical Resources for Developers (Sponsor)

Authorization (AuthZ) often takes the b= ackseat to authentication (AuthN), but it is just as important when scaling= your B2B SaaS apps for enterprises.

Check out these detailed developer guides from WorkOS to get up to speed quickly:

=E2=86=92 T= he Developer's Guide to RBAC: Part I: Fundamentals of RBAC and h= ow it differs from fine-grained authorization (FGA)

=E2=86=92 The Developer's Guide to RBAC: Part II: Why enter= prises prefer identity provider-based authorization systems over basic Auth= Z

=E2=86=92 Unl= ocking the power of SCIM: SCIM is critical for user lifecycle ma= nagement and affects how your customers manage roles and permissions

=E2=86=92 Prefer to learn by doing? Start buil= ding with WorkOS

=F0=9F= =93=B1

Big Tech & Startups

Elon Musk's xAI activates = =E2=80=9Cmost powerful AI training cluster in the world=E2=80=9D with 100k = Nvidia H100 GPUs (2 minute read)

xAI has activated a supercomputer clust= er comprised of 100,000 Nvidia H100 GPUs in Memphis, Tennessee. It is effec= tively the most powerful AI training cluster in the market today. The super= computer is expected to be used to train Grok, the company's large language= model. xAI is estimated to have spent about $3 billion to $4 billion on th= e project. xAI also recently announced that it is hiring to increase its hu= man talent advantage.
Alexa Is in Millions of Hou= seholds=E2=80=94and Amazon Is Losing Billions (13 minute read)

While hundreds of millions of customers= own Alexa-enabled devices, Amazon's bet that people would spend meaningful= amounts of money to buy goods on its platform by talking to the voice assi= stant hasn't paid off. Customers mostly use Alexa to set alarms and check t= he weather. Amazon has lost tens of billions of dollars on its devices busi= ness. The company will launch a paid tier for Alexa as soon as this month a= s part of the plan to reverse these losses.
=F0=9F= =9A=80

Science & Futuristic Technology

China unveils world's 1st m= eltdown-proof nuclear reactor with 105 MW capacity (4 minute read)

Researchers at Tsinghua University in C= hina have successfully demonstrated a meltdown-proof nuclear fission reacto= r. The twin reactor design can generate 105 MW of power each. It can cool i= tself down without an external power source, reaching stable temperatures a= round 35 hours after shutdown. Construction of the facility started in 2016= , with commercial operations beginning only in December last year. One draw= back of the technology is that it can't be retrofitted onto existing nuclea= r reactors.
We're building nuclear spac= eships again=E2=80=94this time for real (23 minute read)

Powering spaceships using compact react= ors could cut down Mars transit times by more than half. The technology als= o has military applications, with DARPA requesting a nuclear rocket demonst= rator in June 2020. The Demonstration Rocket for Agile Cislunar Operations = (DRACO) project aims to create space-based assets that can move quickly wit= hin space to deter strategic attacks by adversaries. This article discusses= the DRACO project and the technologies that make it possible.
=F0=9F= =92=BB

Programming, Design & Data Science

Advertise in TLDR, get in f= ront of 4+ million tech professionals (Sponsor)

If you're looking to get in front of so= ftware developers, product managers, executives and other tech professional= s, consider advertising in TLDR. We have 10 newsletters to choose from and = a subscriber base of 4+ million tech professionals to effectively reach you= r target audience. Learn = more about running your first campaign with us.
Maestro (GitHub Repo)

Maestro is a general-purpose workflow o= rchestrator that can schedule millions of jobs every day and operate with a= strict SLO even when there are spikes in traffic. It is highly scalable an= d extensible and provides a fully managed workflow-as-a-service. Maestro se= rves thousands of data platform users at Netflix for various use cases.
Jiff (GitHub Repo)

Jiff is a datetime library for Rust. It= provides high level datetime primitives with reasonable performance that a= re difficult to misuse. Jiff supports automatic and seamless integration wi= th the Time Zone Database, DST aware arithmetic and rounding, formatting an= d parsing zone aware datetimes losslessly, opt-in Serde support, and more. = Its minimum supported rustc version is 1.70.0.
=F0=9F= =8E=81

Miscellaneous

<= /div>
Ethereum ETFs Approved by S= EC, Bringing Popular Funds to Second-Largest Cryptocurrency (3 minute read)=

US regulators have approved spot exchan= ge-traded funds that hold Ethereum. Bitcoin ETFs, which were approved in Ja= nuary, have attracted tens of billions of dollars of investment. Some analy= sts predict that inflows into ETH ETFs won't be nearly as high as for BTC E= TFs. Ethereum doesn't have the first-mover advantage that Bitcoin had and i= t lacks a strong narrative.
Why technical cofounders re= ject you (7 minute read)

There are many reasons technical cofoun= ders will reject a startup. This article discusses some of these factors, s= uch as unrealistic expectations from founders, putting too much value on an= idea, or a lack of understanding of the market. Building a compelling case= for a technical cofounder to want to join a founder involves providing pro= of that the idea or product will work and that the founder is able to bring= the idea to life. Founders need to prove that they will be successful and = that the train is departing.
=E2=9A= =A1

Quick Links

Tesla Optimus production is= estimated to start in 2025 (1 minute read)

Elon Musk says that Tesla will have gen= uinely useful robots in low production for internal use next year.
No More Blue Fridays (3 min= ute read)

Software updates in the future will be = effectively run in a sandbox that rejects unsafe code.
Google Chrome is no longer = =E2=80=98deprecating third-party cookies' (2 minute read)

Google is introducing additional privac= y controls into Chrome such as IP Protection in Incognito mode.
A gentle introduction to SA= ML (28 minute read)

SAML (Security Assertion Markup Languag= e) defines a flexible set of rules for exchanging security-related messages= in XML.
How fast can a human possib= ly run 100 meters? (5 minute read)

With the ideal anatomy and conditions: = 6.97 seconds.
TinkerBird (GitHub Repo)

TinkerBird is a Chrome-native vector da= tabase with a query engine written in TypeScript designed for efficient sto= rage and retrieval of embeddings.

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If you have any comments or feedback, just respond to this email!

Thanks for reading,
Dan Ni & Stephen Flanders


If you don't want to receive fu= ture editions of TLDR, please unsubscribe = from TLDR or manage all of your TLDR newsletter subscriptions<= /a>.
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