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Secrets Revealed: How Google Photos Built a Lightning-Fast Web UI Ever wondered how Google Photos delivers a seamless web experience, even with millions of photos? As a former engineer on the Google Photos team during its 2015 launch, I helped build the web UI, focusing on the photo grid. Our goal was ambitious: a full-width, aspect-ratio-preserving layout that’s scrubbable, handles hundreds of thousands of photos, scrolls at 60fps, and feels instantaneous. Here’s how we pulled it off. Why Was This So Hard? Two massive challenges stood in our way: size and speed. Huge Metadata : Users with large collections—some with over 250,000 photos—generate megabytes of metadata (URLs, dimensions, timestamps). Sending it all at once would ruin our instant-loading goal. Photo Size : Modern HDPI thumbnails (50KB+ each) add up quickly. Loading thousands could slow browsers to a crawl or crash them, as seen in older Google+ Photos, which lagged after 1,000–2,000 photos and crashed at 10,000. ...

Cryptocurrency: Wallets and Coins Explained Explore the world of digital currencies, their storage options, and popular coins Introduction to Cryptocurrency   Cryptocurrency is a digital or virtual currency secured by cryptography, running on decentralized blockchain networks. Unlike traditional money, it’s free from central authority control, making it resistant to government interference. This post covers types of crypto wallets and major cryptocurrencies in detail. Types of Cryptocurrency Wallets Crypto wallets store private and public keys to interact with blockchain networks for sending, receiving, or storing digital assets. They are divided into hot (online) and cold (offline) wallets. Below is a table summarizing the main types. Wallet Type | Description | Pros | Cons Hardware Wallet | Physical devices (e.g., Ledger Nano, Trezor) storing keys offline for high security. | Top-tier security, tamper-resistant, offline storage. | Costly, less convenient for frequent trans...