Outline
Task-for example, if we need to divide the table, need to focus on two o'clock
1. increase the amount of data to determine the number of sub-table
in query and update data scene, determined by the kind of way points table
data analysis
Table 1. Structure
| Field name | Types of | description |
|---|---|---|
| id | long | Primary key |
| student_id | long | Student id |
| teacher_id | long | Teachers id |
| task_name | varchar | mission name |
| create_time | datetiem | Created |
| … | … | … |
2. The amount of daily tasks
Mean: 347,348
| date | Assignments | date | Assignments |
|---|---|---|---|
| 2020-03-01 | 225925 | 2020-03-13 | 387824 |
| 2020-03-02 | 424014 | 2020-03-14 | 184733 |
| 2020-03-03 | 428069 | 2020-03-15 | 168003 |
| 2020-03-04 | 428821 | 2020-03-16 | 515914 |
| 2020-03-05 | 420984 | 2020-03-17 | 434955 |
| 2020-03-06 | 367536 | 2020-03-18 | 406467 |
| 2020-03-07 | 202577 | 2020-03-19 | 385732 |
| 2020-03-08 | 184836 | 2020-03-20 | 347008 |
| 2020-03-09 | 430492 | 2020-03-21 | 186037 |
| 2020-03-10 | 471406 | 2020-03-22 | 179031 |
| 2020-03-11 | 401931 | 2020-03-23 | 396231 |
| 2020-03-12 | 387274 | 2020-03-24 | 370556 |
3. month assignments
The average monthly number of tasks: 7901876
| month | Assignments |
|---|---|
| October 2019 | 5971953 |
| November 2019 | 7248057 |
| December 2019 | 9418330 |
| January 2020 | 5297569 |
| February 2020 | 10926496 |
| March 2020 | 8548852 |
4. May Live users
May Live users: 225,534
The average monthly user tasks: 35
| month | Number of active users | Monthly increment | The average amount of user growth |
|---|---|---|---|
| 2019-10 | 193368 | 5971953 | 31 |
| 2019-11 | 214237 | 7248057 | 34 |
| 2019-12 | 255763 | 9418330 | 37 |
| 2020-01 | 199287 | 5297569 | 27 |
| 2020-02 | 262315 | 10926496 | 42 |
| 2020-03 | 228235 | 8779162 | 38 |
Scene analysis
After confirming the product, according to the table below scene
teacher terminal
1. Teacher disposed task
2. Teachers teardown
3. See task completion teachers
Students end
1. Students view the list of tasks
2. Students complete the task
The scene can be seen through the use of operations on the table can be acquired current user, user id apparent modulus range or sub-table, but the user id fell on our task table is really two fields (student_id, teacher_id), considering the high degree of aggregation of job data, we grouped according to school id. Table does not currently exist in the school id, it is necessary to end the teachers and students to end the operation table for the current user id to their schools, because the user corresponds school_id relatively unchanged, redis can be cached, add a school id minimal impact on performance.
