小编use*_*300的帖子

我有一张大桌子：

CREATE TABLE "orders" (
"id" serial NOT NULL,
"person_id" int4,
"created" int4,
CONSTRAINT "orders_pkey" PRIMARY KEY ("id")
);

90% 的请求与 过去 2-3 天的订单有关person_id，例如：

select * from orders
where person_id = 1
and created >= extract(epoch from current_timestamp)::int - 60 * 60 * 24 * 3;

我怎样才能提高性能？

我了解分区，但是现有行呢？看起来我需要INHERITS每 2-3 天手动创建一次表。

我有这样的多个香奈儿

client.HMSET('live:user:1', {
    "a": "1",
    "b": "1"
});
client.HMSET('live:user:2', {
    "a": "2",
    "b": "2"
});
client.HMSET('live:user:3', {
    "a": "3",
    "b": "3"
});

client.HMSET('otherchanel:user:4', {
    "a": "4",
    "b": "4"
});
client.HMSET('otherchanel:user:5', {
    "a": "5",
    "b": "5"
});
client.HMSET('otherchanel:user:6', {
    "a": "6",
    "b": "6"
});

如何按键模式"live:*"选择所有值？我需要它将JSON对象重新转换为我的客户端应用程序,如下所示:

[{user:1, a:1, b:1}, {user:2, a:2, b:2}, {user:3, a:3, b:3}]