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Scaling CSS with StyleX

Build a large enough website with a large enough codebase, and you’ll eventually find that CSS presents challenges at scale. It’s no different at Meta, which is why we open-sourced StyleX, a solution for CSS at scale. StyleX combines the ergonomics of CSS-in-JS with the performance of static CSS. It allows atomic styling of components […]

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The post CSS at Scale With StyleX appeared first on Engineering at Meta.

Adapting the Facebook Reels Recommendation System Using User Feedback

We’ve improved personalized video recommendations on Facebook Reels by moving beyond metrics such as likes and watch time and directly leveraging user feedback.  Our new User True Interest Survey (UTIS) model, now helps surface more niche, high-quality content and boosts engagement, retention, and satisfaction. We’re doubling down on personalization, tackling challenges like sparse user data […]

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The post Adapting the Facebook Reels RecSys AI Model Based on User Feedback appeared first on Engineering at Meta.

Cross-Device Passkey Authentication for XR Devices: No Display, No Problem

We’re sharing a novel approach to enabling cross-device passkey authentication for devices with inaccessible displays (like XR devices). Our approach bypasses the use of QR codes and enables cross-device authentication without the need for an on-device display, while still complying with all trust and proximity requirements. This approach builds on work done by the FIDO […]

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The post No Display? No Problem: Cross-Device Passkey Authentication for XR Devices appeared first on Engineering at Meta.

Constructing Prometheus: Backend Aggregation for Gigawatt-Scale AI Clusters

We’re sharing details of the role backend aggregation (BAG) plays in building Meta’s gigawatt-scale AI clusters like Prometheus. BAG allows us to seamlessly connect thousands of GPUs across multiple data centers and regions. Our BAG implementation is connecting two different network fabrics – Disaggregated Schedule Fabric (DSF) and Non-Scheduled Fabric (NSF). Once it’s complete our AI […]

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The post Building Prometheus: How Backend Aggregation Enables Gigawatt-Scale AI Clusters appeared first on Engineering at Meta.

Reviving Traditional Testing: How JiTTesting Revitalizes a 50-Year-Old Field

WHAT IT IS The rise of agentic software development means code is being written, reviewed, and shipped faster than ever before across the entire industry. It also means that testing frameworks need to evolve for this rapidly changing landscape. Faster development demands faster testing that can catch bugs as they land in a codebase, without […]

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The post The Death of Traditional Testing: Agentic Development Broke a 50-Year-Old Field, JiTTesting Can Revive It appeared first on Engineering at Meta.

Budget-Friendly Printers with Inexpensive Ink Choices

best printer choices.

One strategy to avoid these hidden expenses is to consider the long-term costs associated with a printer you’re evaluating. For instance, if you print infrequently, a basic monochrome laser printer is a wise option, as toner remains effective and inexpensive per page. On the other hand, if you frequently use your printer and require color prints, it’s advisable to bypass ultra-low-cost inkjets with pricey cartridges and instead seek models that accommodate third-party cartridges or have refillable tanks.

Choosing one of these options enables you to keep your investment affordable, not just in terms of the printer’s price but also in the long run. Selecting the appropriate printer allows you to manage your expenses for ink refills or cartridges effectively, without being restricted to a narrow selection. You can find the comprehensive methodology at the end of the article for further information on how we selected these printer options.

Brother HL-L2460DW

If you’re in the market for a basic printer primarily for black and white documents, the Brother HL-L2460DW stands out as one of the top choices available. As a laser printer, this model utilizes dry toner powder instead of liquid ink, ensuring that it won’t dry out even if it sits unused for several weeks. Regardless, it’s an excellent home office tool for remote workers and students alike.

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“2018 Sci-Fi Movie: A Revenge Tale Inspired by RoboCop and Venom”

As a creative partnership, James Wan and Leigh Whannell truly harnessed something special when they crafted “Saw” and the initial two “Insidious” movies. They managed to discover an impactful formula for transforming essentially low-budget horror flicks into something that is brutally entertaining and enjoyable, despite their minimal costs. When the two branched out into solo careers, they both partially drew upon that original strategy and mindset, but it was Whannell who took more daring and possibly more ambitious risks to refine his horror craft with subtle adjustments.

After mainly working as an actor and screenwriter, he transitioned into directing. His first directorial effort was fairly conventional (a prequel within the “Insidious” series), but his second film, the 2018 techno-horror “Upgrade,” showcased compelling promise for him as an emerging filmmaker. He wrote and directed that feature with such assurance that it promptly impressed both critics and audiences, making its scant $3 million budget often seem like it was worth ten times that amount.

“Upgrade” centers on Grey Trace (Logan Marshall-Green), a husband and mechanic in a near-future world, who becomes paralyzed after a band of cyborgs shoots him and murders his wife in a brutal manner. As a quadriplegic, Grey is soon presented with a groundbreaking technology in the form of an AI chip implant — and as we’re aware, merging humans with AI comes with significant risks. He hesitantly chooses to undergo the procedure, and the AI, named Stem (voiced by Simon Maiden), aids him in regaining his complete motor functions. Eventually, he discovers that his newfound robotic abilities can assist him in tracking down, identifying, and exacting vengeance on the individuals who murdered his wife and left him immobilized.

“Upgrade” is an exhilarating, bloody, and darkly humorous B-horror experience.

Leigh Whannell’s intriguing concept grabs attention from the start, but it’s truly his innovative direction (paired with Stefan Duscio’s swift, deliberate, and polished cinematography) that transforms “Upgrade” into a tight and thrilling joyride. Whannell shows little interest in pondering the intricate connection between humans and machines — even if “Upgrade” almost instantly evokes Paul Verhoeven’s iconic “RoboCop” — and he focuses more on the revenge narrative and the standout action mixed with the kind of uncompromising gore that turned the “Saw” films into icons of torture porn. While the graphic violence can feel excessive and exaggerated at points, it’s also thrill-seeking and gratifying for B-movie aficionados in a way that very few other genre entries genuinely manage.

The AI’s frigid and somewhat sardonic demeanor may also remind audiences of Ruben Fleischer’s guilty pleasure “Venom” from the same year — a film that critics viewed as a disarray that squandered Tom Hardy’s abilities — where Hardy’s character squabbles with the symbiote residing within him similarly to how Grey interacts with Stem. Honestly, it’s unfortunate that “Upgrade” never quite had the opportunity to achieve the commercial impact of the Marvel film, remaining a relatively modest box office performer that garnered just over $16 million globally.

One thing is certain, though: Whannell’s second venture is a definite delight and an essential watch for fans of B-horror and revenge films. Not to mention that it serves as a masterclass in extracting the maximum potential from a low-budget movie that, frankly, should serve as a study case for every up-and-coming filmmaker. If you somehow missed it back then, you can easily correct that as “Upgrade” is now available for streaming on Netflix.