Cassandra 用户 table 数据建模

Question

我正在学习卡桑德拉。我必须做基本的用户 table 建模。这是我做过的。

CREATE KEYSPACE IF NOT EXISTS users 
WITH replication = {'class': 'SimpleStrategy', 'replication_factor': 3};

CREATE TYPE IF NOT EXISTS users.date_type(
    month SMALLINT,
    day SMALLINT,
    year INT
);

CREATE TYPE IF NOT EXISTS users.phone_type(
    code INT,
    phone TEXT,
);

-- create user
CREATE TABLE IF NOT EXISTS users.user(
    userid TIMEUUID,
    name TEXT,
    dob FROZEN<date_type>,
    username TEXT,
    email TEXT,
    phone FROZEN<phone_type>,
    email_verified BOOLEAN,
    phone_verified BOOLEAN,
    created_on TIMESTAMP,
    PRIMARY KEY (userid)
);

-- get user by username
CREATE TABLE IF NOT EXISTS users.user_by_username(
    userid TIMEUUID,
    username TEXT,
    password TEXT,
    PRIMARY KEY (username)
);

-- get user by user phone number
-- can have same number for more than one account
CREATE TABLE IF NOT EXISTS users.user_by_phone(
    userid TIMEUUID,
    phone FROZEN<phone_type>,
    password TEXT,
    PRIMARY KEY (phone, userid)
);

-- get user by email
-- can have same email for more than one account
CREATE TABLE IF NOT EXISTS users.user_by_email(
    userid TIMEUUID,
    email TEXT,
    password TEXT,
    PRIMARY KEY (email, userid)
);

-- user history
CREATE TABLE IF NOT EXISTS users.user_history(
    userid TIMEUUID,
    name TEXT,
    dob FROZEN<date_type>,
    username TEXT,
    phone FROZEN<phone_type>,
    email TEXT,
    phone_verified BOOLEAN,
    email_verified BOOLEAN,
    action TEXT,
    date TIMESTAMP,
    PRIMARY KEY (userid, date, action)
);

根据 cassandra 数据建模，以上 table 设计是否有效？
为什么因为如果我想创建一个用户，我必须插入 5 tables
如果我想更新电子邮件、phone 或密码，首先我必须删除 table 中的条目，然后插入更新后的值

Answer 1

Is above table design valid as per cassandra data modeling?

是的，根据 Cassandra 数据建模table 设计是有效的。

Why because if I want to create an user, I have to insert in 5 tables

这就是你在 Cassandra 中的做法，首先你有你想要满足的查询，然后根据它们设计你的 tables。

And if I want to update email, phone or password, first I have to delete entry in table then insert with updated values

只需更新值，无需先删除它们。但请确保更新每个 table.

中的相应条目

Cassandra 用户 table 数据建模

Cassandra user table data modelling

cassandra

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