JFrog Repository Naming Rules and Limitations
- Name can not be empty
- Name can not be identical to that of another repository in your Artifactory instance.
- Max number of characters:
- For Local and Virtual repositories = 64
- For Remote and Federated repositories = 58
- Name can not contain the following characters:
- Name can not consist of the following:
- Name can not start with the following:
For more information, see the whitepaper Best Practices For Structuring and Naming Artifactory Repositories.
You can define a repository as Generic in which case it has no particular type, and you may upload packages of any type. Generic repositories do not maintain separate package indexes. For using a client associated with a specific package type (e.g. yum, gem) you should create a matching repository. Generic repositories do not maintain separate package indexes, because they are not specific to any package type. They are useful when you want to proxy unsupported package types, store installers, navigation files, audio files, etc.
Uploading an Incorrect Package Type
While the system will not prevent you from uploading a package of the wrong type to a repository, we strongly recommend maintaining consistency between the repository type and packages you upload. If you do upload packages of the wrong type to a repository, Artifactory will not index the package or update the metadata for the repository.
Local repositories are physical, locally-managed repositories into which you can deploy artifacts.
Artifacts in a local repository can be accessed directly using the following URL:
For full details on configuring local repositories, please refer to the Local Repositories page.
A remote repository serves as a caching proxy for a repository managed at a remote URL (which may itself be another Artifactory remote repository). Artifacts are stored and updated in remote repositories according to various configuration parameters that control the caching and proxying behavior.
You can remove artifacts from a remote repository cache but you cannot actually deploy a new artifact into a remote repository.
Artifacts in a remote repository can be accessed directly using the following URL:
This URL will fetch a remote artifact to the cache if it has not yet been stored.
In some cases it is useful to directly access artifacts that are already stored in the cache (for example to avoid remote update checks).
To directly access artifacts that are already stored in the cache you can use the following URL:
Proxy vs. Mirror
A remote repository acts as a proxy not as a mirror. Artifacts are not pre-fetched to a remote repository cache. They are only fetched and stored on demand when requested by a client.
Therefore, a remote repository should not contain any artifacts in its cache immediately after creation. Artifacts will only be fetched to the cache once clients start working with the remote repository and issuing requests.
For full details on configuring remote repositories please refer to the Remote Repositories page.
A virtual repository (or "repository group") aggregates several repositories with the same package type under a common URL.
Generic Virtual Repositories
By their nature, Virtual Repositories whose package type has been specified as Generic can aggregate repositories of any type, however generic virtual repositories do not maintain any metadata.
The Default Virtual Repository (Deprecated)
Artifactory offers an option to use a global virtual, which contains all local and remote repositories.
By default this option is disabled, to enable the Default Virtual Repository edit the
artifactory.system.properties located at
$JFROG_HOME/artifactory/var/etc/artifactory and set the following flag to
This change requires you restart your Artifactory service.
Once enabled the repository is available at:
Virtual Resolution Order
When an artifact is requested from a virtual repository, the order in which repositories are searched or resolved is local repositories first, then remote repository caches, and finally remote repositories themselves.
Within each of these, the order by which repositories are queried is determined by the order in which they are listed in the configuration as described in General Resolution Order below.
For a virtual repository, you can see the effective search and resolution order in the Included Repositories list view in the Basic settings tab. This is particularly helpful when nesting virtual repositories. For more details on configuring a virtual repository please refer to the Virtual Repositories page.
From JFrog Artifactory 7.18.3, the JFrog Platform enables you to create Federated repositories which allow mirroring of artifacts and their metadata with other repositories of a Federated type located on remote JFrog Deployments (JPDs) in a multisite environment. The Federated repository functions similarly to a local repository on the JPD, but is grouped together logically with other Federated members located on other JPDs, to create a Federation. For more information, see Federated Repositories.
General Resolution Order
You can set the order in which repositories of each type (local, remote and virtual) are searched and resolved by simply ordering them accordingly within the corresponding section of the Configure Repositories page. To set the order you need to add the repositories to the list of selected repositories in the order in which they should be searched to resolve artifacts.
The order in which repositories are searched is also affected by additional factors such as security privileges, include/exclude patterns and policies for handling snapshots and releases.
Several of the settings are common for local, remote and virtual repositories. These are found in the Basic tab of the corresponding New/Edit screen. Additional settings may be found in the type-specific section according to the package types specified for the repository.
|The Package Type. This must be specified when the repository is created, and once set, cannot be changed.|
|The Repository Key. A mandatory identifier for the repository and must be unique. It cannot begin with a number or contain spaces or special characters. For local repositories, we recommend using a "-local" suffix (e.g. "libs-release-local").|
|Sets the layout that the repository should use for storing and identifying modules. A recommended layout that corresponds to the package type defined is suggested, and index packages uploaded and calculate metadata accordingly.|
|A free text field that describes the content and purpose of the repository.|
If you choose to insert a link into this field, clicking the link will prompt the user to confirm that they might be redirected to a new domain.
|A free text field to add additional notes about the repository. These are only visible to the administrator.|
Include and Exclude Patterns
The Include Patterns and the Exclude Patterns fields provide a way to filter out specific repositories when trying to resolve the location of different artifacts.
In each field you can specify a list of Ant-like patterns to filter in and filter out artifact queries. Filtering works by subtracting the excluded patterns (default is none) from the included patterns (default is all).
Consider that the Include Patterns and Exclude Patterns for a repository are as follows:
Include Patterns: org/apache/**,com/acme/** Exclude Patterns: com/acme/exp-project/**
In this case, the repository is searched for
Enable Indexing in Xray
Enables indexing on the repository for security and compliance analysis. Available with JFrog Xray.
Max Unique Snapshots
|Specifies the maximum number of unique snapshots of the same artifact that should be stored, based on the repository layout. Once this number is reached and a new snapshot is uploaded, the oldest stored snapshot is removed automatically.|
A value of 0 (default) indicates that there is no limit on the number of unique snapshots.
If set, Artifactory allows you to deploy release artifacts into this repository.
|If set, Artifactory allows you to deploy snapshot artifacts into this repository.|
Avoiding Security Risks with an Exclude Pattern
This section explains how to use Exclude Patterns to avoid the following security risks.
Prevent Exposure of Internal Artifacts Using Exclude Patterns
Any proprietary artifacts you deploy are stored within local repositories so that they are available for secured and authorized internal use. Anyone searching for one of your internal artifacts by name will extract it through Artifactory from the local repository.
However, consider what happens if a request for an internal artifact is inadvertently directed outside of the organization.
Two examples of how this could happen are:
- there is a simple typo in the requested artifact name
- the developer has requested a snapshot with a version number that does not exist.
In this case, since the system does not find the requested artifact in a local repository, it continues to search through the remote repositories defined in the system. A search through all the remote repositories defined in your system before returning "Not found".
This presents a security risk since any request made on a remote repository may be logged exposing all details of the query including the full artifact name which may include sensitive business information.
Best practices using an excludes pattern for remote repositories to avoid security risks like the Namespace Shadowing Attack
To avoid exposing sensitive business information as described above, we strongly recommend the following best practices:
- The list of remote repositories used in an organization should be managed under a single virtual repository to which all requests are directed
- All internal artifacts should be specified in the Exclude Pattern field of the virtual repository (or alternatively, of each remote repository) using wildcard characters to encapsulate the widest possible specification of internal artifacts.
Prevent Exposure of Internal Packages Using Exclude Patterns
Proxying a public remote repository that is not a trusted repository or is compromised can expose you to malicious artifacts. Sometimes these repositories allow anyone to deploy custom packages. For example, for npm, the public repository is
npmjs, and anyone can deploy any version of any package he/she is the owner of. If a package does not have an owner (no one has previously deployed a version of it) anyone can deploy it and claim it.
For example, let's assume you have a library called "
almo-common-utils" and its source is publicly accessible, if, for instance, it is bundled as part of publicly accessible products or web applications, it’s written in Node and JFrog Artifactory has a set of remote (proxying the public repository), local (for sharing modules internally), and virtual repositories.
Consider the following:
- In a public repository, anyone can publish an unscoped library and call it whatever they want, i.e. "
almo-common-utils"(unless there is a name conflict).
- There is no package named "
almo-common-utils" in the public repository (because it’s an internal corporate library), so there is no name conflict.
- You have projects declaring a dependency on "
almo-common-utils" using a version range. For example, a range specifying the latest version compatible with a major version.
This presents a security risk, as an attacker can try to attack an unprotected organization by just having prior knowledge of the library "
almo-common-utils\", the major version of the library in use (let’s say they know version 3 is used widely in the organization), and the content of the source code.
An attacker can clone and modify the source, embedding any malware inside, but still maintain compatibility with the original code, and upload it to the repository as "
:3.99.99". This will create a version update hijacking of an internal library, when "
almo-common-utils:^3.0.0" is requested, the fake "
almo-common-utils" from the repository is fetched.
To avoid exposing internal packages and internal packages version hijacking, we strongly recommend the following:
- Use exclude patterns on your remote repositories. Exclude the packages you do not want to search outside the organization in the remote repository. You can exclude by prefix (
.npm/almo*/**), by scope (
.npm/@almo/*) or by name (
.npm/almo-encoder/**). By setting these exclude patterns on any public remote repository, you are effectively not merging those packages from the public repositories.
- Only create and publish scoped packages. Register an official organization for your company in the public repository to own a scope for your organization, and always publish only scoped packages. This also simplifies the exclude patterns, as you only need to exclude scoped packages to exclude all the packages from being searched in remote repositories.
Here is an example of blocking packages with the scope "almo" from a remote repository.
Avoiding Performance Issues with an Include Pattern
Include patterns help you avoid clutter in your local repositories by making sure that only certain types of artifact can be hosted there. In a typical scenario, the system willl reference large all-purpose repositories such as JCenter or Maven Central for resolving artifacts.
In addition, Artifactory may reference any number of additional repositories which may host a more specialized and specific set of of artifacts.
If Artifactory receives a request for a deterministic set of artifacts (e.g. a specific version of an artifact), then it searches through the different repositories according to its resolution order until the artifact is found.
However, if Artifactory receives a request for a non-deterministic set of artifacts ( e.g. all versions of
maven-metadata.xml) then it must search through all of the repositories it references until it can provide a complete response.
In most cases, the majority of artifacts downloaded by an organization will come from one of the large all-purpose repositories, but in non-deterministic requests performance is downgraded because Artifactory continues to search through all the specialized repositories before it can return a response.
Best practices using an includes pattern for remote repositories to avoid needless and wasteful search
To avoid performing needless and wasteful search when responding to non-deterministic requests we strongly recommend that all specialized repositories be configured with an appropriate Include Pattern specifying only the set of artifacts that the organization might need.
In this case, non-deterministic requests for artifacts that are typically found in general purpose repositories will skip over the specialized repositories thereby improving performance.
Setting Priority for Safe Remote and Local Repositories
Applies to all repository types excluding CocoaPods, Git LFS, NuGet V2, Opkg, RPM, Rust, Vagrant and VCS repositories).
You can declare local and remote repositories as ‘safe’ by enabling the ‘Priority Resolution’ field for local and remote repositories. Setting Priority Resolution takes precedence over the resolution order when resolving virtual repositories. Setting repositories with priority will cause metadata to be merged only from repositories set with this field. If a package is not found in those repositories, Artifactory will merge metadata from the repositories that have not been set with the Priority Resolution field.
Local and Remote Repositories
In addition to the settings above, Local and Remote repositories share the following settings in the type-specific section for relevant package types.
Max Unique Snapshots
Specifies the maximum number of unique snapshots of the same artifact that should be stored. Once this number is reached and a new snapshot is uploaded, the oldest stored snapshot is removed automatically.
Blank (default) indicates that there is no limit on the number of unique snapshots.
|If set, Artifactory allows you to deploy release artifacts into this repository.|
|If set, Artifactory allows you to deploy snapshot artifacts into this repository.|