🔍 Слишком медленно или жрёт кучу памяти? Эта статья расскажет, как:
1️⃣ Включить CPU- и heap-профилирование через runwww.tg-me.com/pprof 2️⃣ Анализировать .prof`-файлы командой `go tool pprof (topN, граф, list) 3️⃣ Оптимизировать парсинг и работу с данными: стриминг вместо загрузки всего в память, замена дорогих функций, упрощение структур 4️⃣ Профилировать живой сервер через net/http/pprof и ловить hot-spots «на ходу»
⚡ Результат: время работы сократилось с ~14 до ~7 секунд, память — с 1.7 ГБ до 57 МБ!
🔍 Слишком медленно или жрёт кучу памяти? Эта статья расскажет, как:
1️⃣ Включить CPU- и heap-профилирование через runwww.tg-me.com/pprof 2️⃣ Анализировать .prof`-файлы командой `go tool pprof (topN, граф, list) 3️⃣ Оптимизировать парсинг и работу с данными: стриминг вместо загрузки всего в память, замена дорогих функций, упрощение структур 4️⃣ Профилировать живой сервер через net/http/pprof и ловить hot-spots «на ходу»
⚡ Результат: время работы сократилось с ~14 до ~7 секунд, память — с 1.7 ГБ до 57 МБ!
Most people buy Bitcoin via exchanges, such as Coinbase. Exchanges allow you to buy, sell and hold cryptocurrency, and setting up an account is similar to opening a brokerage account—you’ll need to verify your identity and provide some kind of funding source, such as a bank account or debit card. Major exchanges include Coinbase, Kraken, and Gemini. You can also buy Bitcoin at a broker like Robinhood. Regardless of where you buy your Bitcoin, you’ll need a digital wallet in which to store it. This might be what’s called a hot wallet or a cold wallet. A hot wallet (also called an online wallet) is stored by an exchange or a provider in the cloud. Providers of online wallets include Exodus, Electrum and Mycelium. A cold wallet (or mobile wallet) is an offline device used to store Bitcoin and is not connected to the Internet. Some mobile wallet options include Trezor and Ledger.
The SSE was the first modern stock exchange to open in China, with trading commencing in 1990. It has now grown to become the largest stock exchange in Asia and the third-largest in the world by market capitalization, which stood at RMB 50.6 trillion (US$7.8 trillion) as of September 2021. Stocks (both A-shares and B-shares), bonds, funds, and derivatives are traded on the exchange. The SEE has two trading boards, the Main Board and the Science and Technology Innovation Board, the latter more commonly known as the STAR Market. The Main Board mainly hosts large, well-established Chinese companies and lists both A-shares and B-shares.
