Tell us about your experience working with search engines based on Open Search

In my experience with Open Search, I have worked on configuring and optimizing search queries, indexing data, and integrating with Go applications through the official client. For example, I created indexes with custom mappings to improve search relevance and wrote queries using Open Search DSL for filtering and aggregations.

An example of a Go query using the Open Search client:

import (
    "context"
    "fmt"
    "github.com/opensearch-project/opensearch-go"
)

func searchExample(client *opensearch.Client) {
    query := `{
        "query": {
            "match": {
                "title": "golang"
            }
        }
    }`

    res, err := client.Search(
        client.Search.WithContext(context.Background()),
        client.Search.WithIndex("articles"),
        client.Search.WithBody(strings.NewReader(query)),
    )
    if err != nil {
        fmt.Println("Search error:", err)
        return
    }
    defer res.Body.Close()
    // Handling the result
}

I also have experience setting up Open Search clusters and monitoring their health.