June 2018
Beginner to intermediate
240 pages
3h 54m
Russian
Content preview from Алгоритмы и структуры данных. Извлечение информации на языке Java
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15
Сбор данных
в «Википедии»
В этой главе я представляю решение предыдущего упражне-
ния и анализирую эффективность алгоритмов индексиро-
вания в Интернете. Затем мы создадим простого поискового
робота.
Индексатор на основе Redis
В моем решении два вида структур хранятся в Redis:
для каждого поискового термина есть URLSet, который пред-
ставляет собой set с URL базы Redis, содержащими этот
термин;
для каждого URL предусмотрен TermCounter, являющийся
hash в Redis, сопоставляющий каждый поисковый термин
с количеством его появлений.
191
Индексатор на основе Redis
Мы обсудили эти типы данных в предыдущей главе. Кроме
того, прочитать о структурах Redis можно по адресу http://
thinkdast.com/redistypes.
В JedisIndex я предоставляю метод, который принимает ...
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