1 unstable release
| 0.1.0 | Jan 17, 2023 |
|---|
#82 in #internet-computer
215KB
226 lines
ICSQLite
ICSQLite is a cloud SQLite database on Internet Computer and provides SDK for developers to use.
Our goal is to help developers quickly migrate web2 applications to Internet Computer.
Usage
In your Cargo.toml:
[dependencies]
ic-sqlite = "0.1.0"
Limitations & Suggestions
Limited by the total number of cycles of a call, if the number of rows retrieved by a single SQL query exceeds a certain amount, the call will crash.
SQL statement suggestions
- Strictly follow the rules of database optimization
- Index building must be an empty table
- Where query must be filtered for primary key or index field
- Less use NOT,!=,<>,!<,!> NOT EXISTS, NOT IN, NOT LIKE, OR, they will ignore the index and cause a full table scan
Performance benchmarks for SQL commands
| SQL commands |
performance counter 1w single table data |
performance counter 10w single table data |
performance counter 50w single table data |
performance counter 100w single table data |
|---|---|---|---|---|
| create table | 1194347 | 1433766 | 2565609 | 4066020 |
| create index (empty table) |
884588 | 1122419 | 2241730 | 3601724 |
| count | 209847 | 2995943 | 15183853 | 30392494 |
| insert | 350256 | 349635 | 351731 | 355381 |
| select (where primary key) |
265363 | 265960 | 265345 | 268112 |
| select (where index field) |
312389 | 314594 | 314666 | 319276 |
| select (where like field) |
178263088 | 1784671532 | limit for single message execution | limit for single message execution |
| update (where primary key) |
385492 | 389192 | 391599 | 394111 |
| update (where index filed) |
239384 | 237908 | 237993 | 240998 |
| delete (where primary key) |
429190 | 259541 | 419615 | 423064 |
IC Canister Simple example usage
Dependencies
~26–35MB
~556K SLoC