WhatsApp has launched a new security feature that further helps prevent attackers from using vectors like on-device malware. This security feature, called Device Verification, requires no action or additional steps from users and helps protect your account. This feature is part o … | Continue reading
We’re sharing how Meta delivers high-quality audio at scale with the xHE-AAC audio codec. xHE-AAC has already been deployed on Facebook and Instagram to provide enhanced audio for features like Reels and Stories. At Meta, we serve every media use case imaginable for billions of … | Continue reading
Buck2, our new open source, large-scale build system, is now available on GitHub. Buck2 is an extensible and performant build system written in Rust and designed to make your build experience faster and more efficient. In our internal tests at Meta, we observed that Buck2 comple … | Continue reading
Meta is introducing Velox, an open source unified execution engine aimed at accelerating data management systems and streamlining their development. Velox is under active development. Experimental results from our paper published at the International Conference on Very Large Data … | Continue reading
While VR headsets have been with us for at least a decade, AR hardware barely exists today; indeed, the very components that will comprise the hardware scarcely exist, making it a truly zero-to-one innovation challenge. Meta’s Head of AR Glasses Hardware, Caitlin Kalinowski is he … | Continue reading
We’re sharing how we’re enabling production and delivery of AV1 for Facebook Reels and Instagram Reels. We believe AV1 is the most viable codec for Meta for the coming years. It offers higher quality at a much lower bit rate compared with previous generations of video codecs. Met … | Continue reading
What’s new: Meta is sharing the inside story of how it developed the Ray-Ban Stories smart glasses. Why it matters: Creating Ray-Ban Stories meant Meta’s engineers had to take on new challenges to build smart glasses that married complex engineering dynamics. How do you make some … | Continue reading
Meta’s augmented reality (AR) platform is one of the largest in the world, helping the billions of people on Meta’s apps experience AR every day and giving hundreds of thousands of creators a means to express themselves Meta’s AR tools are unique because they can be used on a wid … | Continue reading
A lot has changed since the initial launch of our basemap in late 2020. We’re Meta now, but our mission remains the same: Giving people the power to build community and bring the world closer together. Across Meta, our family of applications (Facebook, Instagram, WhatsApp, among … | Continue reading
Facebook for iOS (FBiOS) is the oldest mobile codebase at Meta. Since the app was rewritten in 2012, it has been worked on by thousands of engineers and shipped to billions of users, and it can support hundreds of engineers iterating on it at a time. After years of iteration, the … | Continue reading
We’ve made architecture changes to Meta’s event driven asynchronous computing platform that have enabled easy integration with multiple event-sources. We’re sharing our learnings from handling various workloads and how to tackle trade offs made with certain design choices in bu … | Continue reading
Managing network solutions amidst a growing scale inherently brings challenges around performance, deployment, and operational complexities. At Meta, we’ve found that these challenges broadly fall into three themes: 1.) Data center networking: Over the past decade, on the phys … | Continue reading
The technical journey discusses the motivations, challenges, and technical solutions employed for warehouse schematization, especially a change to the wire serialization format employed in Meta’s data platform for data interchange related to Warehouse Analytics Logging. Here, we … | Continue reading
Meta has open-sourced Anonymous Credential Service (ACS), a highly available multitenant service that allows clients to authenticate in a de-identified manner. ACS enhances privacy and security while also being compute-conscious. By open-sourcing and fostering a community for ACS … | Continue reading
UPM is our internal standalone library to perform static analysis of SQL code and enhance SQL authoring. UPM takes SQL code as input and represents it as a data structure called a semantic tree. Infrastructure teams at Meta leverage UPM to build SQL linters, catch user mistakes … | Continue reading
We developed a new static analysis tool called Nullsafe that is used at Meta to detect NullPointerException (NPE) errors in Java code. Interoperability with legacy code and gradual deployment model were key to Nullsafe’s wide adoption and allowed us to recover some null-safety pr … | Continue reading
Meta is deploying a timing protocol, Precision Time Protocol (PTP), that will offer new levels of accuracy and precision to our networks and data centers. We believe PTP will become the global standard for keeping time in computer networks. PTP will benefit today’s products and s … | Continue reading
Implementing Precision Time Protocol (PTP) at Meta allows us to synchronize the systems that drive our products and services down to nanosecond precision. PTP’s predecessor, Network Time Protocol (NTP), provided us with millisecond precision, but as we scale to more advanced syst … | Continue reading
Code reviews are one of the most important parts of the software development process At Meta we’ve recognized the need to make code reviews as fast as possible without sacrificing quality We’re sharing several tools and steps we’ve taken at Meta to reduce the time waiting for cod … | Continue reading
Sapling is a new Git-compatible source control client. Sapling emphasizes usability while also scaling to the largest repositories in the world. ReviewStack is a demonstration code review UI for GitHub pull requests that integrates with Sapling to make reviewing stacks of commits … | Continue reading
We’re sharing Tulip, a binary serialization protocol supporting schema evolution. Tulip assists with data schematization by addressing protocol reliability and other issues simultaneously. It replaces multiple legacy formats used in Meta’s data platform and has achieved signifi … | Continue reading
In our constant quest to prioritize efficiency, Instagram’s engineers have developed a way to process new videos that reduces the cost to produce basic video encodings by 94 percent. With this method in place, Meta’s video infrastructure can continue to scale without needing to a … | Continue reading
We’re sharing how Meta is applying statistics and machine learning (ML) to improve notification personalization and management on Instagram – particularly on daily digest push notifications. By using causal inference and ML to identify highly active users who are likely to see mo … | Continue reading
Meta has adopted Kotlin as its new primary language for Android development. We’re sharing lessons learned from shifting from Java to Kotlin. | Continue reading
We’re announcing Grand Teton, plus new innovations we’ve designed to support data centers as they advance to support new AI technologies | Continue reading
Facebook’s in-app browser on Android devices is being updated to improve security, performance, and overall user experience. | Continue reading
Optimizing our infrastructure, reducing the power consumption of data ingestion pipelines and supporting a growing number of AI models | Continue reading
Here's how Suggested Posts was designed to be a marriage between familiarity and exploration for people using Instagram. | Continue reading
TAO runs on a collection of geographically distributed server clusters and handles over a billion read requests and millions of write requests per second. | Continue reading
We’re sharing our internal programming language guidance that helps our engineers and developers choose the best language for their projects. | Continue reading
A dive into the engineering, experimentation, and overall learnings that helped us launch Instagram Messaging for personal desktop computers. | Continue reading
Here’s why engineers at Meta are supporting a larger community push to stop introducing any new leap seconds. | Continue reading
HyperLogLog (HLL) in Presto, a distributed SQL query engine, provides an approximate count of distinct elements using a function called APPROX_DISTINCT. | Continue reading
-Transparent memory offloading (TMO) is Meta’s data center solution for offering more memory at a fraction of the cost and power of existing technologies -In production since 2021, TMO saves 20 percent to 32 percent of memory per server across millions of servers in our data cent … | Continue reading
What the research is: Federated learning with differential privacy (FL-DP) is one of the latest privacy-enhancing technologies being evaluated at Meta as we constantly work to enhance user privacy and further safeguard users’ data in the products we design, build, and maintain. F … | Continue reading
Our novel technique accelerates the fiber route survey process, allowing companies to quickly assess the feasibility of new projects. | Continue reading
BellJar is a framework that allows for exercising infrastructure code under worst-case conditions to uncover the relationships that matter during recovery. | Continue reading
To launch Facebook's cloud gaming platform, engineers at Meta had to develop a new hardware and software infrastructure | Continue reading
Today, we’re open-sourcing Facebook Infer, a static program analyzer that Facebook uses to identify bugs before mobile code is shipped. Static analyzers are automated tools that spot bugs in source code by scanning programs without running them. They complement traditional dynami … | Continue reading
When it comes to cache invalidation, we believe we now have an effective solution to bridge the gap between theory and practice. | Continue reading
Text is a prevalent form of communication on Facebook. Understanding the various ways text is used on Facebook can help us improve people's experiences with our products, whether we're surfacing more of the content that people want to see or filtering out undesirable content like … | Continue reading
Transferring ownership of Jest is an exciting and natural next step as Jest matures as an open-source project. | Continue reading
Delta leverages chain replication as an approach to coordinate clusters of fail-stop storage servers. | Continue reading
Anonymous Credential Service (ACS) is a core service that allows clients to maintain a form of authentication while de-identifying users. | Continue reading
We provide methodologies to implement silent error detection testing at scale and compare results from two different novel approaches. | Continue reading
VESPA is a novel approach to binary optimization that expands the scope of binary optimization to areas such as end-user mobile applications. | Continue reading
The Code Verify extension automatically verifies the authenticity of the WhatsApp Web code being served to your browser. | Continue reading
We’ve developed a new open source static analyzer that catches deadlocks in Java code for Android without ever running the code | Continue reading