Provide Redis version

src/server/web/index.ts

@@ -21,6 +21,7 @@ import parseAcct from '../../misc/acct/parse';
 import getNoteSummary from '../../misc/get-note-summary';
 import { ensure } from '../../prelude/ensure';
 import { getConnection } from 'typeorm';
+import redis from '../../db/redis';
 
 const client = `${__dirname}/../../client/`;
 
@@ -252,6 +253,7 @@ router.get('/info', async ctx => {
 		os: os.platform(),
 		node: process.version,
 		psql: await getConnection().query('SHOW server_version').then(x => x[0].server_version),
+		redis: redis.server_info.redis_version,
 		cpu: {
 			model: os.cpus()[0].model,
 			cores: os.cpus().length