Container Migration Proxy Queuing Mechanism

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Solution Overview

Problem

Existing container migration techniques result in downtime, leading to data loss during the migration process, and do not allow for continuous processing of data within the container.

Innovation Solution

A container migration device that transitions the operation mode of the migration source proxy from a transfer mode to a queuing mode, allowing data to be saved instead of transferred, and then transitions to a queue sendout mode to send the saved data to the migration destination proxy, ensuring seamless data transmission and minimizing downtime.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the container is stopped for migration, then the container can be moved to another device, but data is lost and processing continuity is interrupted

Engineering Contradiction:

Improvedata continuityVSAvoiddowntime

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The patent applies preliminary action by having the migration source proxy save incoming requests and data to a queue before the container is stopped for migration. This ensures that no data is lost during the transition period, as all incoming data is pre-captured in the queue and will be forwarded to the migration destination proxy after the container resumes operation.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent uses the migration source proxy and migration destination proxy as intermediary components that mediate between the request source container and the migrating container. The proxy saves data in a queue during migration and forwards it afterward, acting as a buffer that maintains data continuity without requiring the container itself to remain operational.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Ease of operation

If the container is stopped for migration, then the container can be moved, but requests and data cannot be transmitted to the stopped container

Engineering Contradiction:

Improvedata transmissionVSAvoidrequest handling

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The migration source proxy serves as an intermediary that receives requests and data from the request source container even when the target container is stopped. It saves this data in a queue and forwards it to the migration destination proxy after the container resumes, ensuring seamless request handling without requiring direct container availability.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The system performs preliminary action by capturing and saving all incoming requests and data in the migration source proxy's queue before the container is stopped. This pre-capture mechanism ensures that no requests are lost during migration, and they are systematically processed after the container becomes operational again.

Inventive Principle:

Principle #10Preliminary action

3Loss of time

If differential transfer of container image is used, then downtime is shortened, but downtime is not reduced to zero and data loss still occurs

Engineering Contradiction:

ImprovedowntimeVSAvoiddata loss

Core Design Contradiction:

Loss of timeVSLoss of information

Solution Approach 1:

The patent extends the preliminary action principle by not only saving data before container stop but also maintaining the queue operational during the entire migration process. The migration source proxy continuously saves incoming data to the queue even when the container is stopped, ensuring zero data loss while the container image is being transferred differentially.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The proxy acts as a persistent intermediary that decouples the data transmission path from the container operational state. It receives, saves, and forwards data independently of whether the container is running or being migrated, eliminating the data loss problem that persists even with differential transfer techniques.

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS20250068456A1Container migration device, container migration method, and computer readable medium

Publication Date: 2025.02.27 MITSUBISHI ELECTRIC CORP

AI summary

A container migration device causes an operation mode of a migration source proxy (120) to transition from a transfer mode of: receiving data being transmitted from a request source container (110) that requests data processing; and transferring the received data to a migration source container (130) being a request destination container, to a queuing mode of saving the data instead of transferring. After the operation mode of the migration source proxy transitions to the queueing mode and the migration destination container (150) is activated, the container migration device causes the operation mode of the migration source proxy to transition to a queue sendout mode of sending out the saved data to a migration destination proxy. After sendout of the saved data is completed, the container migration device causes the request source container to change a data transmission destination from the migration source proxy to a migration destination proxy (140).