Initiatives

Service A sends requests to Service B.

In this case, I own B and I don't own A, how can I ensure the connection is alive?

By monitoring the last activity of some route on Service B, if the last activity was 6 hours ago, then this would attract my attention.

Examples

initialize

const lem = require('lem')
lemInstance = new lem.lem();
<!-- OR -->
lemInstance = new lem.lem(
null, {
include: {
'/route1': 10,
'/route2': 10
},
exclude: [
'/route3',
'/route4'
]
},
console.err);

<!-- in express/koa -->
app.use(lemInstance.register());

route registeration options

by default, lemInstance monitor all routes for 6 hours

however, you can also try to pass a dedicated route monitor configuration file to control the behavior

{
include: [
{
'/route1' : 60
},
{
'/route2/subRoute1' : 3600
},
{
'/route3/subRoute2' : 10
}
],
exclude: [
'/route1',
'/route2',
'/route3',
]
}

and monitor is setup to check the /route1 for 1min, /route2/subRoute1 for 1h

RoadMap

• trie implementation for route config
• test converage
• ...