DORA - Deployment Frequency

What is this metric?

How often an organization deploys code to production or release it to end users. Below is a picture showing the definition of DevLake deployments.

Why is it important?

Deployment frequency reflects the efficiency of a team's deployment. A team that deploys more frequently can deliver the product faster and users' feature requirements can be met faster.

Which dashboard(s) does it exist in

DORA dashboard. See live demo.

How is it calculated?

Deployment frequency is calculated based on the number of deployment days, not the number of deployments, e.g., daily, weekly, monthly, yearly.

When there are multiple deployments triggered by one pipeline, tools like GitLab and BitBucket will generate more than one deployment. In these cases, DevLake will consider these deployments as ONE deployment and use the last deployment's finished date as the deployment finished date.

Below are the benchmarks for different development teams from Google's report. DevLake uses the same benchmarks.

Groups	Benchmarks	DevLake Benchmarks	The Criteria of DevLake Benchmarks
Elite performers	On-demand (multiple deploys per day)	On-demand	Median Number of Deployment Days per Week >= 3
High performers	Between once per week and once per month	Between once per week and once per month	Median Number of Deployment Days per Week >= 1
Medium performers	Between once per month and once every 6 months	Between once per month and once every 6 months	Median Number of Deployment Days per Month >= 1
Low performers	Fewer than once per six months	Fewer than once per six months	Median Number of Deployment Days per Month < 1

Source: 2021 Accelerate State of DevOps, Google

Data Sources Required

Deployments from Jenkins, GitLab CI, GitHub Action, BitBucket Pipelines, Webhook, etc.

Transformation Rules Required

Define deployment in data transformations while configuring the blueprint of a project to let DevLake know what CI records can be regarded as deployments.

SQL Queries

DevLake deployments can be found in table cicd_deployment_commits. If you want to measure the monthly trend of deployment count as the picture shown below, run the following SQL in Grafana.

-- Metric 1: Number of deployments per month
with _deployments as(
-- When deploying multiple commits in one pipeline, GitLab and BitBucket may generate more than one deployment. However, DevLake consider these deployments as ONE production deployment and use the last one's finished_date as the finished date.
    SELECT
        date_format(deployment_finished_date,'%y/%m') as month,
        count(cicd_deployment_id) as deployment_count
    FROM (
        SELECT
            cdc.cicd_deployment_id,
            max(cdc.finished_date) as deployment_finished_date
        FROM cicd_deployment_commits cdc
        JOIN project_mapping pm on cdc.cicd_scope_id = pm.row_id and pm.`table` = 'cicd_scopes'
        WHERE
            pm.project_name in ($project)
            and cdc.result = 'SUCCESS'
            and cdc.environment = 'PRODUCTION'
        GROUP BY 1
        HAVING $__timeFilter(max(cdc.finished_date))
    ) _production_deployments
    GROUP BY 1
)

SELECT
    cm.month,
    case when d.deployment_count is null then 0 else d.deployment_count end as deployment_count
FROM
    calendar_months cm
    LEFT JOIN _deployments d on cm.month = d.month
    WHERE $__timeFilter(cm.month_timestamp)

If you want to measure in which category your team falls as in the picture shown below, run the following SQL in Grafana. Unlike monthly deployments which are based on the number of deployments, the metric below is based on deployment days.

with last_few_calendar_months as(
-- construct the last few calendar months within the selected time period in the top-right corner
    SELECT CAST((SYSDATE()-INTERVAL (H+T+U) DAY) AS date) day
    FROM ( SELECT 0 H
            UNION ALL SELECT 100 UNION ALL SELECT 200 UNION ALL SELECT 300
        ) H CROSS JOIN ( SELECT 0 T
            UNION ALL SELECT  10 UNION ALL SELECT  20 UNION ALL SELECT  30
            UNION ALL SELECT  40 UNION ALL SELECT  50 UNION ALL SELECT  60
            UNION ALL SELECT  70 UNION ALL SELECT  80 UNION ALL SELECT  90
        ) T CROSS JOIN ( SELECT 0 U
            UNION ALL SELECT   1 UNION ALL SELECT   2 UNION ALL SELECT   3
            UNION ALL SELECT   4 UNION ALL SELECT   5 UNION ALL SELECT   6
            UNION ALL SELECT   7 UNION ALL SELECT   8 UNION ALL SELECT   9
        ) U
    WHERE
        (SYSDATE()-INTERVAL (H+T+U) DAY) > $__timeFrom()
),

_production_deployment_days as(
-- When deploying multiple commits in one pipeline, GitLab and BitBucket may generate more than one deployment. However, DevLake consider these deployments as ONE production deployment and use the last one's finished_date as the finished date.
    SELECT
        cdc.cicd_deployment_id as deployment_id,
        max(DATE(cdc.finished_date)) as day
    FROM cicd_deployment_commits cdc
    JOIN project_mapping pm on cdc.cicd_scope_id = pm.row_id
    WHERE
        pm.project_name in ($project)
        and cdc.result = 'SUCCESS'
        and cdc.environment = 'PRODUCTION'
    GROUP BY 1
),

_days_weeks_deploy as(
-- calculate the number of deployment days every week
    SELECT
            date(DATE_ADD(last_few_calendar_months.day, INTERVAL -WEEKDAY(last_few_calendar_months.day) DAY)) as week,
            MAX(if(_production_deployment_days.day is not null, 1, 0)) as weeks_deployed,
            COUNT(distinct _production_deployment_days.day) as days_deployed
    FROM
        last_few_calendar_months
        LEFT JOIN _production_deployment_days ON _production_deployment_days.day = last_few_calendar_months.day
    GROUP BY week
    ),

_monthly_deploy as(
-- calculate the number of deployment days every month
    SELECT
            date(DATE_ADD(last_few_calendar_months.day, INTERVAL -DAY(last_few_calendar_months.day)+1 DAY)) as month,
            MAX(if(_production_deployment_days.day is not null, 1, 0)) as months_deployed
    FROM
        last_few_calendar_months
        LEFT JOIN _production_deployment_days ON _production_deployment_days.day = last_few_calendar_months.day
    GROUP BY month
    ),

_median_number_of_deployment_days_per_week_ranks as(
    SELECT *, percent_rank() over(order by days_deployed) as ranks
    FROM _days_weeks_deploy
),

_median_number_of_deployment_days_per_week as(
    SELECT max(days_deployed) as median_number_of_deployment_days_per_week
    FROM _median_number_of_deployment_days_per_week_ranks
    WHERE ranks <= 0.5
),

_median_number_of_deployment_days_per_month_ranks as(
    SELECT *, percent_rank() over(order by months_deployed) as ranks
    FROM _monthly_deploy
),

_median_number_of_deployment_days_per_month as(
    SELECT max(months_deployed) as median_number_of_deployment_days_per_month
    FROM _median_number_of_deployment_days_per_month_ranks
    WHERE ranks <= 0.5
)

SELECT
    CASE
        WHEN median_number_of_deployment_days_per_week >= 3 THEN 'On-demand'
        WHEN median_number_of_deployment_days_per_week >= 1 THEN 'Between once per week and once per month'
        WHEN median_number_of_deployment_days_per_month >= 1 THEN 'Between once per month and once every 6 months'
        ELSE 'Fewer than once per six months' END AS 'Deployment Frequency'
FROM _median_number_of_deployment_days_per_week, _median_number_of_deployment_days_per_month

How to improve?

• Trunk development. Work in small batches and often merge their work into shared trunks.
• Integrate CI/CD tools for automated deployment
• Improve automated test coverage