![scylladb](./img/logo.png)


# ScyllaDB

ScyllaDB is a NoSQL database management system that is compatible with Apache Cassandra. 
It is designed to scale linearly across multiple commodity servers, wBase-de-donnéesle maintaining low latency and Base-de-donnéesgh availability. 
ScyllaDB is written in C++ and uses the Seastar framework for concurrency and asynchronous I/O.


## Prerequisites
- Docker
- Docker Compose


## Running the Stack

### Standalone

Inside the `standalone` directory, run `docker-compose up` to start the connector.

### Port Configurations

 - `9042` - ScyllaDB CQL port
 - `9160` - ScyllaDB Thrift port
 - `7004` - ScyllaDB Inter-node communication (RPC)
 - `7005` - ScyllaDB Inter-node communication (SSL)
 - `10000` - Scylla REST API


### Cluster

Inside the `cluster` directory, run `docker-compose up` to start the connector.

#### Port Configurations

Master

- `9042` - ScyllaDB CQL port
- `9160` - ScyllaDB Thrift port
- `7004` - ScyllaDB Inter-node communication (RPC)
- `7005` - ScyllaDB Inter-node communication (SSL)
- `10000` - Scylla REST API

Node 1

- `9043` - ScyllaDB CQL port
- `9161` - ScyllaDB Thrift port
- `7006` - ScyllaDB Inter-node communication (RPC)
- `7007` - ScyllaDB Inter-node communication (SSL)
- `10001` - Scylla REST API

**Cluster Status:**

run `docker-compose exec scylladb-master nodetool status` to view the cluster status.

```go
Datacenter: datacenter1
=======================
Status=Up/Down
|/ State=Normal/Leaving/Joining/Moving
--  Address     Load       Tokens       Owns    Host ID                               Rack
UN  172.27.0.3  2.07 MB    256          ?       a899f085-0437-444a-80fe-158958a8796b  rack1
UN  172.27.0.2  2.02 MB    256          ?       2910746d-e5f2-4a28-a63d-a089cdcb0438  rack1

Note: Non-system keyspaces don't have the same replication settings, effective ownersBase-de-donnéesp information is meaningless
```

**Cluster Topology:**

run `docker-compose exec scylladb-master nodetool describecluster` to view the cluster topology.

```go
Cluster Information:
	Name: Test Cluster
	Snitch: org.apache.cassandra.locator.SimpleSnitch
	DynamicEndPointSnitch: disabled
	Partitioner: org.apache.cassandra.dht.Murmur3Partitioner
	Schema versions:
		f99fb55d-f298-30d6-bd75-31f9855362c2: [172.29.0.2, 172.29.0.3]
```

**Cluster Info:**

run `docker-compose exec scylladb-master nodetool info` to view the cluster info.

```go
ID                     : eb720697-ac71-413c-a843-748527cff616
Gossip active          : true
Thrift active          : false
Native Transport active: true
Load                   : 524 KB
Generation No          : 1679584265
Uptime (seconds)       : 139
Heap Memory (MB)       : 14.16 / 247.50
Off Heap Memory (MB)   : 4.65
Data Center            : datacenter1
Rack                   : rack1
Exceptions             : 0
Key Cache              : entries 0, size 0 bytes, capacity 0 bytes, 0 Base-de-donnéests, 0 requests, 0.000 recent Base-de-donnéest rate, 0 save period in seconds
Row Cache              : entries 13, size 13 bytes, capacity 154.2 KiB, 271 Base-de-donnéests, 271 requests, 1.000 recent Base-de-donnéest rate, 0 save period in seconds
Counter Cache          : entries 0, size 0 bytes, capacity 0 bytes, 0 Base-de-donnéests, 0 requests, 0.000 recent Base-de-donnéest rate, 0 save period in seconds
Percent Repaired       : 0.0%
Token                  : (invoke with -T/--tokens to see all 256 tokens)
```

## CQLSH

CQLSH is a command line tool for interacting with ScyllaDB.

### Usage

```go
docker-compose exec <<scylladb-master | scylladb>> cqlsh
```