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vbaranov merged 3 commits into from
Mar 6, 2026
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Deprecate envs related to migration to language field in smart_contracts table #98

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b4d81eb
Deprecate envs related to migration to `language` field in `smart_con…
fedor-ivn Feb 26, 2026
9a998cf
Move envs to the proper deprecated envs file
fedor-ivn Mar 6, 2026
86d3064
Update setup/env-variables/deprecated-env-variables.mdx
vbaranov Mar 6, 2026
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5 changes: 1 addition & 4 deletions setup/env-variables/backend-env-variables.mdx
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Expand Up @@ -139,7 +139,7 @@
| `HACKNEY_DEFAULT_POOL_SIZE` | Size of `default` hackney pool. Implemented in [#12406](https://github.com/blockscout/blockscout/pull/12406). | Version: v8.1.0\+ <br />Default: `1000` <br />Applications: API, Indexer |
| `UNIVERSAL_PROXY_CONFIG_URL` | Config URL for universal proxy. Implemented in [#12442](https://github.com/blockscout/blockscout/pull/12442). | Version: v8.1.0\+ <br />Default: `https://raw.githubusercontent.com/blockscout/backend-configs/refs/heads/main/universal-proxy-config.json` <br />Applications: API |
| `UNIVERSAL_PROXY_CONFIG` | JSON-encoded configuration string used to define settings for the universal proxy. Implemented in [#13787](https://github.com/blockscout/blockscout/pull/13787). | Version: v10.0.0\+ <br />Default: (empty) <br />Applications: API |
| `K8S_SERVICE` | Kubernetes service name for Elixir nodes clusterization, more info on how to configure it can be found here https://hexdocs.pm/libcluster/Cluster.Strategy.Kubernetes.DNS.html. Implemented in [#13080](https://github.com/blockscout/blockscout/pull/13080). | Version: v9.2.0\+ <br />Default: (empty) <br />Applications: API, Indexer |

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## Database Management

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| `MIGRATION_TOKEN_INSTANCE_ERC_1155_SANITIZE_BATCH_SIZE` | Batch size for `erc-1155-sanitize` token instance fetcher. Implemented in [#9226](https://github.com/blockscout/blockscout/pull/9226). Default value and name changed in [#11543](https://github.com/blockscout/blockscout/pull/11543) | Version: v7.0.0\+ <br />Default: `500` <br />Applications: Indexer |
| `MIGRATION_TOKEN_INSTANCE_ERC_721_SANITIZE_BATCH_SIZE` | Batch size for `erc-721-sanitize` token instance fetcher. Implemented in [#9226](https://github.com/blockscout/blockscout/pull/9226). Default value and name changed in [#11543](https://github.com/blockscout/blockscout/pull/11543) | Version: v7.0.0\+ <br />Default: `50` <br />Applications: Indexer |
| `MIGRATION_TOKEN_INSTANCE_ERC_721_SANITIZE_TOKENS_BATCH_SIZE` | Tokens batch size for `erc-721-sanitize` token instance fetcher. Implemented in [#9226](https://github.com/blockscout/blockscout/pull/9226). Name changed in [#11543](https://github.com/blockscout/blockscout/pull/11543) | Version: v7.0.0\+ <br />Default: `100` <br />Applications: Indexer |
| `MIGRATION_SMART_CONTRACT_LANGUAGE_DISABLED` | If set to `true`, the migration to the `language` field in the `smart_contracts` table will not start. If set to `false`, the migration proceeds as normal. Implemented in [#11813](https://github.com/blockscout/blockscout/pull/11813). | Version: v8.0.0\+ <br />Default: `false` <br />Applications: Indexer |
| `MIGRATION_SMART_CONTRACT_LANGUAGE_BATCH_SIZE` | Defines the number of records to be processed in each batch when migrating the `language` field in the `smart_contracts` table. Implemented in [#11813](https://github.com/blockscout/blockscout/pull/11813). | Version: v8.0.0\+ <br />Default: `100` <br />Applications: Indexer |
| `MIGRATION_SMART_CONTRACT_LANGUAGE_CONCURRENCY` | Specifies how many concurrent processes can handle the `language` field migration. Implemented in [#11813](https://github.com/blockscout/blockscout/pull/11813). | Version: v8.0.0\+ <br />Default: `1` <br />Applications: Indexer |
| `MIGRATION_BACKFILL_METADATA_URL_DISABLED` | If set to `true`, the backfiller of `metadata_url` field in the `token_instances` table will not start. If set to `false`, the migration proceeds as normal. Implemented in [#12102](https://github.com/blockscout/blockscout/pull/12102). | Version: v8.0.0\+ <br />Default: `false` <br />Applications: Indexer |
| `MIGRATION_BACKFILL_METADATA_URL_BATCH_SIZE` | Defines the number of records to be processed in each batch when backfilling the `metadata_url` field in the `token_instances` table. Implemented in [#12102](https://github.com/blockscout/blockscout/pull/12102). | Version: v8.0.0\+ <br />Default: `100` <br />Applications: Indexer |
| `MIGRATION_BACKFILL_METADATA_URL_CONCURRENCY` | Specifies how many concurrent processes can handle the `metadata_url` field backfilling. Implemented in [#12102](https://github.com/blockscout/blockscout/pull/12102). | Version: v8.0.0\+ <br />Default: `5` <br />Applications: Indexer |
Expand Down Expand Up @@ -722,4 +719,4 @@
| `FOOTER_TELEGRAM_LINK` | Link in Telegram menu item in the footer. Implemented in [#7345](https://github.com/blockscout/blockscout/pull/7345). | Version: v5.1.4\+ <br />Default: (empty) <br />Applications: API |
| `FOOTER_GITHUB_LINK` | Github repository. Implemented in [#5719](https://github.com/blockscout/blockscout/pull/5719). | Version: v4.1.6\+ <br />Default: `https://github.com/blockscout/blockscout` <br />Applications: API |
| `FOOTER_LINK_TO_OTHER_EXPLORERS` | true/false. If true, links to other explorers are added in the footer. | Version: v5.1.3\+ <br />Default: (empty) <br />Applications: API |
| `FOOTER_OTHER_EXPLORERS` | The list of alternative explorers.
| `FOOTER_OTHER_EXPLORERS` | The list of alternative explorers.
3 changes: 3 additions & 0 deletions setup/env-variables/deprecated-env-variables.mdx
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| `API_RATE_LIMIT` | A global API rate limit: number or requests per second for all users. Implemented in [#5030](https://github.com/blockscout/blockscout/pull/5030) | | v4.1.1+ | | v9.0.0 |
| `CACHE_PBO_COUNT_PERIOD` | Time interval to restart the task which calculates the total pending_block_operations count. | `20m` | v5.2.0+ | | v10.0.0 |
| `MIGRATION_DELETE_ZERO_VALUE_INTERNAL_TRANSACTIONS_STORAGE_PERIOD_DAYS` | Specifies the period for which recent zero-value calls won't be deleted in delete zero-value calls migration. | 30 | v9.3.0+ | | v9.3.3 |
| `MIGRATION_SMART_CONTRACT_LANGUAGE_DISABLED` | If set to `true`, the migration to the `language` field in the `smart_contracts` table will not start. If set to `false`, the migration proceeds as normal. Implemented in [#11813](https://github.com/blockscout/blockscout/pull/11813). | `false` | v8.0.0+ | | v11.0.0 |
| `MIGRATION_SMART_CONTRACT_LANGUAGE_BATCH_SIZE` | Defines the number of records to be processed in each batch when migrating the `language` field in the `smart_contracts` table. Implemented in [#11813](https://github.com/blockscout/blockscout/pull/11813). | 100 | v8.0.0+ | | v11.0.0 |
| `MIGRATION_SMART_CONTRACT_LANGUAGE_CONCURRENCY` | Specifies how many concurrent processes can handle the `language` field migration. Implemented in [#11813](https://github.com/blockscout/blockscout/pull/11813). | 1 | v8.0.0+ | | v11.0.0 |
| `INDEXER_TOKEN_BALANCES_BATCH_SIZE` | Batch size for archival token balances fetcher. Implemented in [#7439](https://github.com/blockscout/blockscout/pull/7439). Replaced with `INDEXER_ARCHIVAL_TOKEN_BALANCES_BATCH_SIZE` | `100` | v5.1.5+ | | v10.0.0 |
| `INDEXER_TOKEN_BALANCES_CONCURRENCY` | Concurrency for archival token balances fetcher. Implemented in [#8167](https://github.com/blockscout/blockscout/pull/8167). Replaced with `INDEXER_ARCHIVAL_TOKEN_BALANCES_CONCURRENCY` | `10` | v5.2.2+ | | v10.0.0 |
| `INDEXER_TOKEN_BALANCES_EXPONENTIAL_TIMEOUT_COEFF` | Coefficient to calculate exponential timeout. Implemented in [#10694](https://github.com/blockscout/blockscout/pull/10694). Replaced with `INDEXER_ARCHIVAL_TOKEN_BALANCES_EXPONENTIAL_TIMEOUT_COEFF` | `100` | v6.9.0+ | | v10.0.0 |
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1 change: 0 additions & 1 deletion setup/env-variables/deprecated-env-variables/env-variables.mdx
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| `TRACE_FIRST_BLOCK` | | The block number, where indexing of internal transactions begins from. | 0 | v4.1.0+ | API, Indexer |
| `TRACE_LAST_BLOCK` | | The block number, where indexing of internal transactions stops. | (empty) | v4.1.0+ | API, Indexer |
| `BLOCK_RANGES` | | Block ranges to import by catchup fetcher. Example: `BLOCK_RANGES="1..3,123..500,30..50,500..latest"`. Implemented in [#5783](https://github.com/blockscout/blockscout/pull/5783) | | v4.1.7+ | Indexer |
| `FETCH_REWARDS_WAY` | | Tells the application how to calculate block rewards, by fetching via json\_rpc (`trace_block`) or manual by block params (`manual`). | trace\_block | v4.1.4+ | Indexer |

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| `IPFS_GATEWAY_URL` | | IPFS gateway url for fetching token instances metadata from IPFS including token instance icon. | https\://ipfs.io/ipfs | v5.3.0+ | Indexer |
| `IPFS_GATEWAY_URL_PARAM_KEY` | | The key of the parameter to add to IPFS gateway url. Implemented in [#9898](https://github.com/blockscout/blockscout/pull/9898). | (empty)) | v6.5.0+ | Indexer |
| `IPFS_GATEWAY_URL_PARAM_VALUE` | | The value of the parameter to add to IPFS gateway url. Implemented in [#9898](https://github.com/blockscout/blockscout/pull/9898). | (empty)) | v6.5.0+ | Indexer |
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| `CONTRACT_VERIFICATION_MAX_LIBRARIES` | | Max amount of libraries to consider in smart-contract verification from flat/multi-part file(s). Implemented in [#6204](https://github.com/blockscout/blockscout/pull/6204). | (empty) | v5.0.0+ | API |
| `CONTRACT_MAX_STRING_LENGTH_WITHOUT_TRIMMING` | | Hide long contract method data. For more details: [#4667](https://github.com/blockscout/blockscout/pull/4667) | 2040 | v4.0.0+ | API |
| `CONTRACT_DISABLE_INTERACTION` | | If `true`, contract interactions via "Write contract" or "Write proxy contract" tabs are disabled. Introduced in [#7088](https://github.com/blockscout/blockscout/pull/7088). | (empty) | v5.1.2+ | API |
| `CONTRACT_PROXY_IMPLEMENTATION_TTL_VIA_AVG_BLOCK_TIME` | | If `false`, proxy contract implementation will be re-fetched immediately once someone opend proxy page bypassing average block time calculation. Implemented in [#9155](https://github.com/blockscout/blockscout/pull/9155). | true | v6.1.0+ | API |

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| `CONTRACT_AUDIT_REPORTS_AIRTABLE_URL` | | URL of AirTable to store audit reports from users. Implemented in [#9120](https://github.com/blockscout/blockscout/pull/9120) | (empty) | v6.1.0+ | API |
| `CONTRACT_AUDIT_REPORTS_AIRTABLE_API_KEY` | | Access token for `CONTRACT_AUDIT_REPORTS_AIRTABLE_URL`. Implemented in [#9120](https://github.com/blockscout/blockscout/pull/9120) | (empty) | v6.1.0+ | API |
| `CONTRACT_CERTIFIED_LIST` | | Comma-separated list of smart-contract addresses hashes, to which "certified" flag should be applied. Implemented in [#9910](https://github.com/blockscout/blockscout/pull/9910) | (empty) | v6.5.0+ | API |
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| `MUD_DATABASE_URL` | | MUD indexer DB connection URL. | value from `DATABASE_URL` | v6.6.0+ | API |
| `MUD_POOL_SIZE` | | MUD indexer DB `pool_size` | 50 | v6.6.0+ | API |