tarantool

问题 I want to perform a selection on a Tarantool space, using filtering and limiting the results, as I can do with a simple SQL query like " SELECT * FROM users WHERE age > 33 LIMIT 1 ". How can I achieve that? 回答1: It can be done using Lua as well as SQL. 1) Here is an example in Lua. Assume we have a space named "users" with fields "name", "surname", "age". First, let's create and populate the space: $ tarantool Tarantool 2.1.1-465-gbd1a43fbc type 'help' for interactive help tarantool> box.cfg(

问题 I want to perform a selection on a Tarantool space, using filtering and limiting the results, as I can do with a simple SQL query like " SELECT * FROM users WHERE age > 33 LIMIT 1 ". How can I achieve that? 回答1: It can be done using Lua as well as SQL. 1) Here is an example in Lua. Assume we have a space named "users" with fields "name", "surname", "age". First, let's create and populate the space: $ tarantool Tarantool 2.1.1-465-gbd1a43fbc type 'help' for interactive help tarantool> box.cfg(

问题 I was reading this article about Tarantool and they seem to say that AOF and WAL log are not working the same way. Tarantool: besides snapshots, it has a full-scale WAL (write ahead log). So it can secure data persistency after each transaction out-of-the-box. Redis: in fact, it has snapshots only. Technically, you have AOF (append-only file, where all the operations are written), but it requires manual control over it, including manual restore after reboot. Simply put, with Redis you need to

问题 I was reading this article about Tarantool and they seem to say that AOF and WAL log are not working the same way. Tarantool: besides snapshots, it has a full-scale WAL (write ahead log). So it can secure data persistency after each transaction out-of-the-box. Redis: in fact, it has snapshots only. Technically, you have AOF (append-only file, where all the operations are written), but it requires manual control over it, including manual restore after reboot. Simply put, with Redis you need to

问题 I was reading this article about Tarantool and they seem to say that AOF and WAL log are not working the same way. Tarantool: besides snapshots, it has a full-scale WAL (write ahead log). So it can secure data persistency after each transaction out-of-the-box. Redis: in fact, it has snapshots only. Technically, you have AOF (append-only file, where all the operations are written), but it requires manual control over it, including manual restore after reboot. Simply put, with Redis you need to

问题 A Tarantool Cartridge role file has a function init . I want to get my custom options from the instance.yml file. But the opts variable doesn't have it. How I can do it? 回答1: Cartridge has a built-in module called "argparse". It parses a few sources of configuration and combines them together: instances.yml or files in /etc/tarantool/conf.d command line arguments environment variables starting with TARANTOOL_ Cartridge uses this module to get various pieces of configuration like the port

来源： https://stackoverflow.com/questions/64065868/how-to-implement-default-config-section-for-a-custom-tarantool-cartridge-role

来源： https://stackoverflow.com/questions/64065868/how-to-implement-default-config-section-for-a-custom-tarantool-cartridge-role

来源： https://stackoverflow.com/questions/64065868/how-to-implement-default-config-section-for-a-custom-tarantool-cartridge-role

来源： https://stackoverflow.com/questions/64065868/how-to-implement-default-config-section-for-a-custom-tarantool-cartridge-role