Long-form writing from RdyGo LLC on software durability, Shopify promotions, AI agent observability, open-source subscription infrastructure, and how we pick products to hold.https://rdygo.com/en-us© RdyGo LLC. All rights reserved.https://rdygo.com/journal/bet-a-career-reliability/https://rdygo.com/journal/bet-a-career-reliability/The vendor-tool graveyard has a cost no pricing page shows: the career risk of picking wrong. After two decades of shipping enterprise software, we are opening a holding company around one thesis — software worth keeping.Thu, 23 Apr 2026 13:30:00 GMTsoftware reliabilityholding companyenterprise softwarethesisRdyGohttps://rdygo.com/journal/vault-shopify-promotions-engine/https://rdygo.com/journal/vault-shopify-promotions-engine/Shopify discount apps fail quietly — missing end dates, gift-stacking chains, negative-margin pairs, POS drift. Vault ships 22 discount types behind one wizard, with a pre-launch risk audit that catches the leaks before a campaign goes live.Thu, 23 Apr 2026 13:00:00 GMTShopify promotionsShopify discount appShopify BOGOstackable discountsdiscount auditRdyGohttps://rdygo.com/journal/revenuecat-alternatives-self-hosted/https://rdygo.com/journal/revenuecat-alternatives-self-hosted/RevenueCat is the category default, and for good reason. It is also closed-source and hosted-only. When your subscription data is a compliance artifact or your team has crossed the per-event pricing threshold, the alternatives worth evaluating are OpenRevKit, Adapty, and Glassfy.Thu, 23 Apr 2026 12:30:00 GMTRevenueCat alternativesopen source subscriptionsself-hosted subscriptionssubscription SDKmobile subscriptionsRdyGohttps://rdygo.com/journal/openrevkit-subscriptions-platform/https://rdygo.com/journal/openrevkit-subscriptions-platform/SKU-centric subscription code rots the moment pricing changes. OpenRevKit ships an entitlement-centric model across Apple, Google, Stripe, Amazon, and Roku — clients branch on what a customer can do, not what they bought. Self-host the open-source build, or use the hosted service.Thu, 23 Apr 2026 12:00:00 GMTopen source subscriptionssubscription platformentitlements SDKRevenueCat alternativemobile subscriptionsCTV subscriptionsRdyGohttps://rdygo.com/journal/stack-shopify-discounts-safely/https://rdygo.com/journal/stack-shopify-discounts-safely/Shopify's native combination rules are too coarse for layered promotions. Five real stacking patterns — BOGO with percentage off, tag-gated threshold discounts, bundle-plus-tier, time-window velocity, and free-gift unlocks — each with the failure mode that burns merchants and the guardrail that prevents it.Thu, 23 Apr 2026 11:30:00 GMTShopify stackingShopify discount combinationsBOGO stackingShopify margin protectiondiscount stacking rulesRdyGohttps://rdygo.com/journal/invokeplane-agent-observability/https://rdygo.com/journal/invokeplane-agent-observability/Chatbot tracing tools flatten agents into linear traces. Agents branch, retry, tool-call, get interrupted. InvokePlane ships streaming sessions, tenant-owned model keys, multi-tenant isolation, and eval-gated publishing — an observability and control plane for teams shipping agents into production.Thu, 23 Apr 2026 11:00:00 GMTagent observabilityLangSmith alternativeagentic AIeval-gated publishingmulti-tenant LLMRdyGohttps://rdygo.com/journal/shopify-discount-apps-compared-2026/https://rdygo.com/journal/shopify-discount-apps-compared-2026/Four names dominate the Shopify App Store for discount and promotion apps. Compare Vault, Discounty, Bold Discounts, and BOGOS on stacking rules, pre-launch audit, POS handling, customer-tag gating, and pricing. A feature matrix plus the trade-offs a matrix can't carry.Thu, 23 Apr 2026 10:30:00 GMTShopify discount appsShopify promotion appsVault ShopifyDiscountyBold DiscountsBOGOSRdyGohttps://rdygo.com/journal/langsmith-alternatives-multi-tenant/https://rdygo.com/journal/langsmith-alternatives-multi-tenant/LangSmith presumes a single org with a single key pool. Multi-tenant AI platforms need per-tenant key isolation, per-tenant eval gates, and session-scoped traces. Compare LangSmith, Langfuse, Helicone, and InvokePlane on those axes, with the trade-offs that matter.Thu, 23 Apr 2026 10:00:00 GMTLangSmith alternativesagent observabilitymulti-tenant LLMLLM tracingBYO-key platformsRdyGohttps://rdygo.com/journal/cross-platform-subscriptions-sku/https://rdygo.com/journal/cross-platform-subscriptions-sku/Subscription SKU sprawl compounds exponentially per store. Better spreadsheets do not fix it. The fix is a provisioning layer that treats SKUs as derived artifacts of entitlements — the client branches on capabilities, the server manages the mapping to store-specific products.Thu, 23 Apr 2026 09:30:00 GMTcross-platform subscriptionsmobile subscriptionsIAP provisioningentitlementsSKU managementRdyGohttps://rdygo.com/journal/rdyrack-macos-parallel-ai/https://rdygo.com/journal/rdyrack-macos-parallel-ai/A native macOS editor for solo engineers running four parallel work streams. Grid terminals, AI panels alongside shells, broadcast input across panes, right-click a stack trace into a new Claude session. Opinionated, dark, fast.Thu, 23 Apr 2026 09:00:00 GMTmacOS AI editorparallel Claude sessionsnative developer toolAI coding workflowbroadcast terminalRdyGo