Я начинаю работать в python и ArangoDB. Я занимался данными в ArangoDB на одном столбце «DSP». Мой запрос:Как улучшить производительность запроса в ArangoDB 2.7
for k in
(for t in DSP return [t.data])
for z in k
for p in z
filter p.name == "name" ||
p.content == "pdf" ||
p.content == "xml" ||
p.name == "Book"
return p
и данные JSON, которые в храним: в в формате, как
{"data": [{"content": "Java", "type": "string", "name": "name", "key": 1}, {"content": "D:/Java", "type": "string", "name": "location", "key": 1}, {"content": "File folder", "type": "string", "name": "type", "key": 1}, {"content": 1896038645, "type": "int", "name": "size", "key": 1}, {"content": 7, "type": "string", "name": "child_folder_count", "key": 1}, {"content": 7, "type": "string", "name": "child_file_count", "key": 1}, {"content": "parse_dir.py", "type": "string", "name": "name", "key": 101}, {"content": "D:/Java/parse_dir.py", "type": "string", "name": "location", "key": 101}, {"content": "py", "type": "string", "name": "mime-type", "key": 101}, {"content": 4032, "type": "string", "name": "size", "key": 101}, {"content": "Wed Dec 30 21:36:32 2015", "type": "string", "name": "created_date", "key": 101}, {"content": "Wed Dec 30 21:42:38 2015", "type": "string", "name": "modified_date", "key": 101}, {"content": "result.json", "type": "string", "name": "name", "key": 102}, {"content": "D:/Java/result.json", "type": "string", "name": "location", "key": 102}, {"content": "json", "type": "string", "name": "mime-type", "key": 102}, {"content": 1134450, "type": "string", "name": "size", "key": 102}, {"content": "Wed Dec 30 21:36:45 2015", "type": "string", "name": "created_date", "key": 102}, {"content": "Wed Dec 30 21:36:45 2015", "type": "string", "name": "modified_date", "key": 102}, {"content": "rmi1.rar", "type": "string", "name": "name", "key": 103}, {"content": "D:/Java/rmi1.rar", "type": "string", "name": "location", "key": 103}, {"content": "rar", "type": "string", "name": "mime-type", "key": 103}, {"content": 165116, "type": "string", "name": "size", "key": 103}, {"content": "Sun Aug 25 07:29:52 2013", "type": "string", "name": "created_date", "key": 103}, {"content": "Tue Aug 30 16:18:34 2011", "type": "string", "name": "modified_date", "key": 103}, {"content": "servlet.rar", "type": "string", "name": "name", "key": 104}, {"content": "D:/Java/servlet.rar", "type": "string", "name": "location", "key": 104}, {"content": "rar", "type": "string", "name": "mime-type", "key": 104}, {"content": 782, "type": "string", "name": "size", "key": 104}, {"content": "Sun Aug 25 07:29:52 2013", "type": "string", "name": "created_date", "key": 104}, {"content": "Tue Aug 30 16:18:30 2011", "type": "string", "name": "modified_date", "key": 104}, {"content": "crawler projects", "type": "string", "name": "name", "key": 2}, {"content": "D:/Java/crawler projects", "type": "string", "name": "location", "key": 2}, {"content": "File folder", "type": "string", "name": "type", "key": 2}, {"content": 1886842316, "type": "int", "name": "size", "key": 2}, {"content": 5, "type": "string", "name": "child_folder_count", "key": 2}, {"content": 5, "type": "string", "name": "child_file_count", "key": 2}, {"content": ".metadata", "type": "string", "name": "name", "key": 3}, {"content": "D:/Java/crawler projects/.metadata", "type": "string", "name": "location", "key": 3}, {"content": "File folder", "type": "string", "name": "type", "key": 3}, {"content": 10131546, "type": "int", "name": "size", "key": 3}, {"content": 2, "type": "string", "name": "child_folder_count", "key": 3}, {"content": 2, "type": "string", "name": "child_file_count", "key": 3}, {"content": ".lock", "type": "string", "name": "name", "key": 301}, {"content": "D:/Java/crawler projects/.metadata/.lock", "type": "string", "name": "location", "key": 301}, {"content": "", "type": "string", "name": "mime-type", "key": 301}, {"content": 0, "type": "string", "name": "size", "key": 301}, {"content": "Sun Aug 25 07:29:52 2013", "type": "string", "name": "created_date", "key": 301}, {"content": "Mon May 30 12:21:45 2011", "type": "string", "name": "modified_date", "key": 301}, {"content": ".log", "type": "string", "name": "name", "key": 302}, {"content": "D:/Java/crawler projects/.metadata/.log", "type": "string", "name": "location", "key": 302}, {"content": "", "type": "string", "name": "mime-type", "key": 302}, {"content": 598, "type": "string", "name": "size", "key": 302}, {"content": "Sun Aug 25 07:29:52 2013", "type": "string", "name": "created_date", "key": 302}, {"content": "Mon May 30 15:29:18 2011", "type": "string", "name": "modified_date", "key": 302}, {"content": "version.ini", "type": "string", "name": "name", "key": 303}, {"content": "D:/Java/crawler projects/.metadata/version.ini", "type": "string", "name": "location", "key": 303}, {"content": "ini", "type": "string", "name": "mime-type", "key": 303}, {"content": 26, "type": "string", "name": "size", "key": 303}, {"content": "Sun Aug 25 07:29:52 2013", "type": "string", "name": "created_date", "key": 303}, {"content": "Mon May 30 15:29:18 2011", "type": "string", "name": "modified_date", "key": 303}, {"content": ".mylyn", "type": "string", "name": "name", "key": 4}, {"content": "D:/Java/crawler projects/.metadata/.mylyn", "type": "string", "name": "location", "key": 4}, {"content": "File folder", "type": "string", "name": "type", "key": 4}, {"content": 920, "type": "int", "name": "size", "key": 4}, {"content": 1, "type": "string", "name": "child_folder_count", "key": 4}, {"content": 1, "type": "string", "name": "child_file_count", "key": 4}, {"content": ".tasks.xml.zip", "type": "string", "name": "name", "key": 401}, {"content": "D:/Java/crawler projects/.metadata/.mylyn/.tasks.xml.zip", "type": "string", "name": "location", "key": 401}, {"content": "zip", "type": "string", "name": "mime-type", "key": 401}, {"content": 250, "type": "string", "name": "size", "key": 401}, {"content": "Sun Aug 25 07:29:52 2013", "type": "string", "name": "created_date", "key": 401}, {"content": "Mon May 30 12:23:18 2011", "type": "string", "name": "modified_date", "key": 401}, {"content": "repositories.xml.zip", "type": "string", "name": "name", "key": 402}, {"content": "D:/Java/crawler projects/.metadata/.mylyn/repositories.xml.zip", "type": "string", "name": "location", "key": 402}, {"content": "zip", "type": "string", "name": "mime-type", "key": 402}, {"content": 420, "type": "string", "name": "size", "key": 402}, {"content": "Sun Aug 25 07:29:52 2013", "type": "string", "name": "created_date", "key": 402}, {"content": "Mon May 30 12:23:18 2011", "type": "string", "name": "modified_date", "key": 402}, {"content": "tasks.xml.zip", "type": "string", "name": "name", "key": 403}, {"content": "D:/Java/crawler projects/.metadata/.mylyn/tasks.xml.zip", "type": "string", "name": "location", "key": 403}, {"content": "zip", "type": "string", "name": "mime-type", "key": 403}, {"content": 250, "type": "string", "name": "size", "key": 403}, {"content": "Sun Aug 25 07:29:52 2013", "type": "string", "name": "created_date", "key": 403}, {"content": "Mon May 30 15:31:16 2011", "type": "string", "name": "modified_date", "key": 403}, {"content": "contexts", "type": "string", "name": "name", "key": 5}, {"content": "D:/Java/crawler projects/.metadata/.mylyn/contexts", "type": "string", "name": "location", "key": 5}, {"content": "File folder", "type": "string", "name": "type", "key": 5}, {"content": 0, "type": "int", "name": "size", "key": 5}, {"content": 0, "type": "string", "name": "child_folder_count", "key": 5}]
Как я добавлять JSon документы около 100 из JSon документа около 15 MB каждый, или добавить еще n условий фильтра. Запрос занимает более 1 минуты времени, и некоторое время браузер не отвечает.
Я делаю этот эксперимент на ядре Intel i3 2,4 ГГц, 4 ГБ оперативной памяти и 160 ГБ жестком диске SATA.
Пожалуйста, скажите мне, во-первых, как улучшить производительность запроса? Мне нужно изменить структуру хранилища или изменить синтаксис моего запроса. и как выполнять операции объединения в нескольких документах, имеющих один и тот же ключ. Например, «получить имя документа типа xml».
Спасибо, stj ... Я работаю в 2.7 версии ArangoDB, которая не позволяет создавать несколько хеш-индексов для разумной коллекции. когда я использовал запрос в FOR k IN DSP FOR p IN k.data filter p.name == "modified_date" || .type == "string" return p format, время уменьшается вдвое. –