SQL over HTTP.
sqld supports MySQL (-type mysql
), Postgres (-type postgres
), and SQLite (-type sqlite3
) databases.
go get github.com/mmaelzer/sqld
Usage of 'sqld':
sqld -u root -db database_name -h localhost:3306 -type mysql
Flags:
-db string
database name
-dsn string
database source name
-h string
database host
-p string
database password
-port int
http port (default 8080)
-raw
allow raw sql queries
-type string
database type (default "mysql")
-u string
database username (default "root")
-url string
url prefix (default "/")
The name of the database. Just like use my_database
.
The dsn
is the data source name for the database, used when making the initial connection to the database. If specified, any host (h
), user (u
), or password (p
) values will be ignored in favor of the dsn
.
-
MySQL : For MySQL the format looks like
{user}/{password}@({host})/{database_name}?parseTime=true
. More info on MySQL dsn values: https://github.com/go-sql-driver/mysql#dsn-data-source-name -
Postgres : For Postgres the format looks like
postgres://{user}:{password}@{host}/{database_name}?sslmode=disable
. More info on Postgres dsn values: https://godoc.org/github.com/lib/pq#hdr-Connection_String_Parameters -
SQLite : For SQLite the format can be a file name
test.db
orfile:test.db?cache=shared&mode=memory
or an in-memory store with:memory:
. More info on SQLite dsn values: https://godoc.org/github.com/mattn/go-sqlite3#SQLiteDriver.Open
The database hostname. For example, running locally, MySQL will generally be localhost:3306
and for Postgres localhost:5432
.
The database password.
The HTTP port to serve requests from.
The database type. Currently supported types are mysql
, postgres
, and sqlite3
.
The database username.
The url prefix to use. For example -url api
will serve requests from http://hostname:port/api/table
or -url foo/bar
will serve requests from http://hostname:port/foo/bar/table
.
Interact with the database via URLs.
http://localhost:8080/table_name
The following equivalent to a request with table_name?id=10
http://localhost:8080/table_name/10
http://localhost:8080/table_name?id=10
http://localhost:8080/table_name?name=fred&age=67
http://localhost:8080/table_name?__limit__=20&name=bob
http://localhost:8080/table_name?__limit__=20&__offset__=100
http://localhost:8080/table_name?__order_by__=id+DESC
Create rows in the database via POST requests.
POST http://localhost:8080/table_name
{
"name": "jim",
"age": 54
}
{
"id": 10,
"name": "jim",
"age": 54
}
Update a row in the database with PUT requests.
PUT http://localhost:8080/table_name/:id?where=clause
{
"name": "jill"
}
Empty
Delete a row in the database with DELETE requests.
DELETE http://localhost:8080/table_name/:id?where=clause
Empty
If you use the -raw
flag when launching sqld, you can POST
raw SQL queries that will be evaluated and returned. Queries are provided inside of the JSON request body with either read
or write
keys and string values that contain the SQL to execute.
For example, if we run sqld -name=my_db -raw
we can perform queries like:
POST http://localhost:8080
{
"read": "SELECT * FROM user WHERE name LIKE %ji%"
}
[
{
"id": 66,
"name": "jill"
},
{
"id": 71,
"name": "jim"
}
]
{
"write": "CREATE TABLE number (id INT NOT NULL AUTO_INCREMENT, num INT NOT NULL, PRIMARY KEY ( id ) )"
}
{
"last_insert_id": 0,
"rows_affected": 0
}
For a completely unscientific benchmark, on my Core i5 laptop (2 cores), I ran wrk against a local sqld / mysql instance on a 2-column table with 10 rows. The corresponding SQL query SELECT * FROM user
takes ~250μs when run in the mysql console.
❯ wrk -t10 -d10 http://localhost:8080/user
Running 10s test @ http://localhost:8080/user
10 threads and 10 connections
Thread Stats Avg Stdev Max +/- Stdev
Latency 3.82ms 10.28ms 114.96ms 97.53%
Req/Sec 484.34 124.50 0.86k 73.02%
48213 requests in 10.02s, 16.60MB read
Requests/sec: 4811.80
Transfer/sec: 1.66MB
MIT