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89 lines
2.9 KiB
Markdown
89 lines
2.9 KiB
Markdown
---
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title: Service
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---
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<!--
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#
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# Licensed to the Apache Software Foundation (ASF) under one or more
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# contributor license agreements. See the NOTICE file distributed with
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# this work for additional information regarding copyright ownership.
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# The ASF licenses this file to You under the Apache License, Version 2.0
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# (the "License"); you may not use this file except in compliance with
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# the License. You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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#
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-->
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`Service` 是某类 API 的抽象（也可以理解为一组 Route 的抽象）。它通常与上游服务抽象是一一对应的，`Route`
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与 `Service` 之间，通常是 N:1 的关系，参看下图。
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不同 Route 规则同时绑定到一个 Service 上，这些 Route 将具有相同的上游和插件配置，减少冗余配置。
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比如下面的例子，创建了一个启用限流插件的 Service，然后把 id 为 `100`、`101` 的 Route 都绑定在这个 Service 上。
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```shell
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# create new Service
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$ curl http://127.0.0.1:9080/apisix/admin/services/200 -H 'X-API-KEY: edd1c9f034335f136f87ad84b625c8f1' -X PUT -d '
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{
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"plugins": {
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"limit-count": {
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"count": 2,
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"time_window": 60,
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"rejected_code": 503,
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"key": "remote_addr"
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}
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},
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"upstream": {
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"type": "roundrobin",
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"nodes": {
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"39.97.63.215:80": 1
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}
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}
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}'
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# create new Route and reference the service by id `200`
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curl http://127.0.0.1:9080/apisix/admin/routes/100 -H 'X-API-KEY: edd1c9f034335f136f87ad84b625c8f1' -X PUT -d '
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{
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"methods": ["GET"],
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"uri": "/index.html",
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"service_id": "200"
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}'
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curl http://127.0.0.1:9080/apisix/admin/routes/101 -H 'X-API-KEY: edd1c9f034335f136f87ad84b625c8f1' -X PUT -d '
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{
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"methods": ["GET"],
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"uri": "/foo/index.html",
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"service_id": "200"
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}'
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```
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当然我们也可以为 Route 指定不同的插件参数或上游，比如下面这个 Route 设置了不同的限流参数，其他部分（比如上游）则继续使用 Service 中的配置参数。
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```shell
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curl http://127.0.0.1:9080/apisix/admin/routes/102 -H 'X-API-KEY: edd1c9f034335f136f87ad84b625c8f1' -X PUT -d '
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{
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"uri": "/bar/index.html",
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"id": "102",
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"service_id": "200",
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"plugins": {
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"limit-count": {
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"count": 2000,
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"time_window": 60,
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"rejected_code": 503,
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"key": "remote_addr"
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}
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}
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}'
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```
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注意：当 Route 和 Service 都开启同一个插件时，Route 参数的优先级是高于 Service 的。
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