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Engineering at Meta is a technical news resource for engineers interested in how we solve large-scale technical challenges at Meta
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05/18/2026

How do you migrate a data ingestion system that processes several petabytes daily without any downtime?

We just published a deep dive into how our team pulled this off. The system incrementally ingests up-to-date snapshots of Meta's social graph into the data warehouse for analytics, machine learning training, and product development across the company.

Key insight: The hardest problem wasn't just building the new architecture. It was also ensuring every single job could be migrated seamlessly while the system remained fully operational. That challenge was intensified by the sheer volume of jobs and the complexity of their logic. We addressed it with a rigorous 3-phase migration lifecycle, automated quality tooling, and clear migration planning.

Read the full technical deep dive on how our team pulled this off: engineering.fb.com/2026/05/12/data-infrastructure/migrating-data-ingestion-systems-at-meta-scale/

05/13/2026

Good security should always be invisible. When Meta launched encrypted backups for Messenger in 2023, we set a new bar for end-to-end encrypted (E2EE) messaging at scale. With E2EE messaging backups your message history can travel with you across devices without ever being readable by any other party, including Meta.

Today, we’re evolving the work we began with Labyrinth, our protocol for end-to-end encrypting stored messages history between devices on your Messenger account. Labyrinth 1.1 improves backup reliability with a new sub-protocol that lets messages reach your encrypted backup as they’re sent, rather than waiting for your device to come back online, which is how Messenger encrypted backups currently work.

This means your messages are safe even if you lose your phone, switch devices, or have a long gap between sign-ins. Each message is wrapped with a message encryption key that the sender places directly into the recipient’s encrypted backup — like dropping a sealed envelope into a locked box only the recipient can open. No one but you and the people you’re talking to can read your messages – not even us.

We’re rolling Labyrinth 1.1 out broadly to Messenger and are already seeing meaningful gains with more messages successfully backed up and more people restoring their full message history when they change devices.

Read our updated white paper, “The Labyrinth Encrypted Message Storage Protocol” for more information: https://go.meta.me/4c30af

04/27/2026

Today, we are announcing two landmark partnerships with Overview Energy and Noon Energy to deliver reliable, innovative power to our AI infrastructure and data centers.

🛰️ Harnessing Space Solar: We are partnering with Overview Energy to deploy up to 1 GW of orbit-to-grid solar energy to Earth. By utilizing satellites in geosynchronous orbit to beam near-infrared light to ground facilities, we can enable around-the-clock energy production from existing solar infrastructure.

🔋 Ultra-Long-Duration Storage: We have reserved up to 1 GW/100 GWh of energy storage capacity with Noon Energy. Their modular, reversible solid oxide fuel cell technology provides over 100 hours of storage, far surpassing the limitations of current lithium-ion systems.

These partnerships with Overview and Noon build on our approach to helping strengthen the grid through diverse and reliable solutions.

Learn more: https://go.meta.me/635755

04/21/2026

We're breaking ground on a new AI-optimized data center in Tulsa, Oklahoma — our first in the state.

Once operational, this facility will be purpose-built for AI workloads. Here's what's going into it from an engineering standpoint:

💧 Water-efficient cooling: The facility uses a closed-loop, liquid-cooled system that recirculates the same water and requires zero water for server cooling during the majority of the year. We're also paying the full costs of water and wastewater service so those costs aren't passed on to consumers.

⚡ Grid investment + clean energy: We're matching 100% of the data center's energy use with clean energy and adding over 1,500 MW of clean energy to the Oklahoma grid. Through our utility bills, we'll pay hundreds of millions of dollars to fund grid infrastructure that benefit all consumers.

🎓 Technical workforce development: We're partnering with Tulsa Tech and Tulsa Community College on a cross-institutional program for digital infrastructure careers. The goal: 200+ graduates annually trained in cooling simulation, fiber optics, structured cabling, and AI/data analytics programming.

🌾 Water restoration at scale: A 10-year partnership with Phytech will deploy plant-sensor technology across approximately 1,500 acres of commodity crops — corn, soybeans, winter wheat — to save over 50 million gallons of water per year. Part of our goal to be water positive by 2030.

More on our Tulsa data center: https://go.meta.me/1bac0e

04/20/2026

The fiber technician field is facing a nationwide shortage at a time when data center demand is higher than ever. Today we're announcing LevelUp: a free, four-week training program designed to turn people with no prior experience into high-paid fiber technicians.

We're launching this multi-year initiative in partnership with CBRE, which will operate the program. Here's what it looks like:

🔧 Rapid, hands-on training: Four weeks of classroom instruction, hands-on labs, and team activities covering transferable technical skills in the fiber technician space. No prior experience required.

🎓 Job pathway: Through Meta's contractor network, successful graduates will have the opportunity to work at our US construction sites. Whether you're a recent high school graduate or a mid-career professional, this is a direct on-ramp to the data center and construction industries.

📊 Why this matters: Since 2010, Meta's data center projects have supported more than 30,000 skilled trade jobs during construction and 5,000+ permanent operational roles, including site managers, engineers, technicians. We currently operate or are building 27 data centers in the US alone. The demand for fiber technicians to build and maintain this infrastructure isn't slowing down.

Learn more: https://go.meta.me/0eb3f6

04/15/2026

At Meta, real-time communication (RTC) powers everything from Messenger and Instagram video chats to Cloud Gaming and VR casting on Meta Quest. To meet the performance demands of billions of users, we spent years developing a specialized, high-performance variant of the open-source WebRTC library.

But permanently forking a large open-source project often leads to the "forking trap"—where internal features accumulate and merging external commits becomes prohibitive.

We recently concluded a massive multiyear migration to break this cycle, moving 50+ use cases from a divergent WebRTC fork to a modular architecture built on the latest upstream version.

To achieve this in a monorepo with strict static linking constraints, we engineered a dual-stack architecture. By building a shim layer—a proxy library with a unified, version-agnostic API—we ran both the legacy and latest WebRTC implementations simultaneously for safe A/B testing. We solved thousands of C++ One Definition Rule (ODR) symbol collisions using automated renamespacing and AST-based code generation, adding only ~5 MB to our binary size instead of the ~38 MB that duplicating higher-layer orchestration would have caused.

Instead of being years behind, we are now "living at head" with stable Chromium releases. This modernization dropped CPU usage by up to 10%, improved crash rates by up to 3%, and reduced compressed binary sizes by 100-200 KB across major apps.

Read the full technical breakdown on how we engineered our way out of the forking trap: https://engineering.fb.com/2026/04/09/developer-tools/escaping-the-fork-how-meta-modernized-webrtc-across-50-use-cases/

04/14/2026

We're expanding our partnership with Broadcom to co-develop multiple generations of MTIA, our custom silicon optimized for AI inference and recommendation at scale.

The partnership spans chip design, advanced packaging, and networking, built on Broadcom's XPU platform. The commitment: 1GW+ of custom silicon to start, with a multi-gigawatt roadmap ahead.

This builds on our recent announcement of 4 new MTIA generations shipping within the next 2 years and is part of our portfolio approach to AI silicon, matching the right accelerator to each workload for the best mix of performance and total cost of ownership.

Read more: https://go.meta.me/220372

04/01/2026

We're using AI to help the construction industry transition to more sustainable, domestically-produced materials. At the American Concrete Institute (ACI) Spring Convention, we released BOxCrete, a new open-source AI model designed to optimize concrete mixes.

By leveraging Bayesian optimization, BOxCrete helps engineers find new formulations in a fraction of the time. In our Rosemount, MN data center project, this AI-driven approach resulted in:

✅ 43% faster time to full structural strength
✅ 10% reduction in cracking risk
✅ 100% domestic material usage

We are open-sourcing the model and the foundational data to empower producers everywhere. Check out the full technical deep dive on our Engineering blog: https://go.meta.me/29c5b9

03/26/2026

Our next-gen data center in El Paso, Texas is officially growing to 1GW. Here are a few updates:

📐 The build: We're increasing our investment from $1.5B to more than $10B, supporting 4,000+ construction jobs at peak + 300 permanent operational roles once complete.

🎓 The community: A new $500K workforce development partnership with El Paso Public Schools will connect students with career paths in STEM + trades through real-world learning experiences.

💧 Water stewardship: The data center's closed-loop cooling system means zero operational water use most of the year. We're also partnering with DigDeep to bring clean water to 100+ homes for the first time and Bonneville Environmental Foundation to restore millions of gallons annually through new irrigation tech for local farmers.

Learn more here: https://about.fb.com/news/2025/10/metas-new-ai-optimized-data-center-el-paso/

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