While trying to open my user's crontab on Ubuntu, the system barked back:
$ crontab -l
crontabs/myuser/: fopen: Permission denied
This is due to improper permissions on crontab executable.
mysql -u<user_name> -p<user_password> <db_name> - подключение к БД | |
SELECT | |
TABLE_NAME,COLUMN_NAME,CONSTRAINT_NAME, REFERENCED_TABLE_NAME,REFERENCED_COLUMN_NAME | |
FROM | |
INFORMATION_SCHEMA.KEY_COLUMN_USAGE | |
WHERE | |
REFERENCED_TABLE_SCHEMA = '<db_name>' [AND | |
REFERENCED_TABLE_NAME = '<table_name>' ...] - просмотр всех CONSTRAINT таблиц(ы) | |
queueCb( | |
[ | |
'https://jsonplaceholder.typicode.com/posts/1', | |
'https://jsonplaceholder.typicode.com/posts/2', | |
'https://jsonplaceholder.typicode.com/posts/4', | |
'https://jsonplaceholder.typicode.com/posts/4', | |
'https://jsonplaceholder.typicode.com/posts', | |
'https://jsonplaceholder.typicode.com/posts/3', | |
'https://jsonplaceholder.typicode.com/posts/1', | |
], |
// Нужно разгрузить EventLoop выполняя тяжелую функцию heavyComputationFunction на большом кол-ве данных. | |
// P.S. попробовать реализовать по-блочное выполнение функции | |
const array2 = [...new Array(100000)].map(() => ({ | |
...largeDataset, | |
})); | |
array2.forEach(data => { | |
heavyComputationFunction(data) | |
}); |