В статье описан алгоритм вакуумирования PostgreSQL и приводится сравнение числа сканирований индексов в 17 версии PostgreSQL и предыдущих версиях.
Есть пять фаз вакуумирования каждой таблицы, mwiew, toast и индексов на них: SCAN_HEAP, VACUUM_INDEX, VACUUM_HEAP, INDEX_CLEANUP, VACUUM TRUNCATE. Помимо них есть подготовительная фаза инициализации и завершающая фаза. Читать дальше.
В статье описан алгоритм вакуумирования PostgreSQL и приводится сравнение числа сканирований индексов в 17 версии PostgreSQL и предыдущих версиях.
Есть пять фаз вакуумирования каждой таблицы, mwiew, toast и индексов на них: SCAN_HEAP, VACUUM_INDEX, VACUUM_HEAP, INDEX_CLEANUP, VACUUM TRUNCATE. Помимо них есть подготовительная фаза инициализации и завершающая фаза. Читать дальше.
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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.
Start with a fresh view of investing strategy. The combination of risks and fads this quarter looks to be topping. That means the future is ready to move in.Likely, there will not be a wholesale shift. Company actions will aim to benefit from economic growth, inflationary pressures and a return of market-determined interest rates. In turn, all of that should drive the stock market and investment returns higher.
